Do you need to know, when is the best time to go to North? Then you should take a look here, what weather you can expect there during the year.
North is part of Brazil. Brazil is a huge country, so the climate is varied here. Mostly the climate is tropical, but temperate in south. Near the equator the weather doesn't change much during the year, but winters are sometimes cold in the south. And in the mountainous it snows. Most of Brazil has only moderate rainfall, but the Amazon region is humid.
When speaking about the usual weather in this area, the information is relevant for example for these popular places: Acre, Alter do Chão, Amapá, Amazonas, Amazônia National Park, Anavilhanas, Barcelos, Belterra, Belém, Benjamin Constant, Boa Vista, Bonfim, Capanema, Fordlândia, Guajará Mirim, Ilha do Marajó, Ilha do Mosqueiro, Iranduba, Itaituba, Jaú National Park, Macapá, Mamirauá, Manacapuru, Manaus, Monte Alegre, Natividade, Oiapoque, Palmas, Parauapebas, Parintins, Pará, Porto Velho, Presidente Figueiredo, Rio Branco, Rondônia, Roraima, Salinópolis, Santana, Santarém, Serra do Divisor, São Gabriel da Cachoeira, Tabatinga, Taquarussu, Tefé, Tocantins, Vilhena, Xixuau.
Let's look now what weather you can expect in the area around Manaus and in many other cities. The warmest month here is September, the average maximum temperature is 33.9 ℃ (93.02 ℉). The average minimum temperature in this month is 24.1 ℃ (75.38 ℉). The coldest month here is February, the average maximum temperature is 30.5 ℃ (86.9 ℉). The average minimum temperature in this month is 23.5 ℃ (74.3 ℉). The most rainy month here is March, the average number of rainy days is 21.1. The least rainy month here is August, the average number of rainy days is 7.2. 
When travelling around North, always consider the altitude of the the place as well. We should remind you, that the highest point in Brazil is Pico da Neblina (2994 m) and the lowest point is Atlantic Ocean (0 m). So there are quite big differences in altitudes in this country, so you can expect the weather to be different in different altitudes as well. Keep in mind, that the temperature usually decreases by 1.2 - 1.9 ℃ (2.2 - 3.5 ℉) per 200 m (656 ft), depending on the other conditions. (And we should add, that in the very special condition named thermal inversion even the temperature may be higher in higher altitudes.)
Typical (usual) weather in North in January is this: The average highest temperature in North in January is 30.9 ℃ (87.62 ℉). The average lowest temperature is 23.5 ℃ (74.3 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 30.95 ℃ (87.71 ℉). At the end of January you can expect lower temperatures, the average highest temperature is around 30.7 ℃ (87.26 ℉). The average number of rainy days in January is 20.7. The average rainfall is 262.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:17 (hours and minutes), in the middle of the month 12:16 and at the end of the month 12:14.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in February is this: The average highest temperature in North in February is 30.5 ℃ (86.9 ℉). The average lowest temperature is 23.5 ℃ (74.3 ℉). At the beginning of February you can expect higher temperatures, the average highest temperature is around 30.7 ℃ (87.26 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 30.85 ℃ (87.53 ℉). The average number of rainy days in February is 20.1. The average rainfall is 289.3 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:14 (hours and minutes), in the middle of the month 12:12 and at the end of the month 12:10.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in March is this: The average highest temperature in North in March is 31.2 ℃ (88.16 ℉). The average lowest temperature is 23.8 ℃ (74.84 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 30.85 ℃ (87.53 ℉). At the end of March you can expect lower temperatures, the average highest temperature is around 31.15 ℃ (88.07 ℉). The average number of rainy days in March is 21.1. The average rainfall is 313.7 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:10 (hours and minutes), in the middle of the month 12:07 and at the end of the month 12:04.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in April is this: The average highest temperature in North in April is 31.1 ℃ (87.98 ℉). The average lowest temperature is 23.1 ℃ (73.58 ℉). At the beginning of April you can expect higher temperatures, the average highest temperature is around 31.15 ℃ (88.07 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 31.2 ℃ (88.16 ℉). The average number of rainy days in April is 19.9. The average rainfall is 293.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:04 (hours and minutes), in the middle of the month 12:02 and at the end of the month 12:00.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in May is this: The average highest temperature in North in May is 31.3 ℃ (88.34 ℉). The average lowest temperature is 23.6 ℃ (74.48 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 31.2 ℃ (88.16 ℉). At the end of May you can expect lower temperatures, the average highest temperature is around 31.3 ℃ (88.34 ℉). The average number of rainy days in May is 19.4. The average rainfall is 258.4 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:00 (hours and minutes), in the middle of the month 11:58 and at the end of the month 11:57.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in June is this: The average highest temperature in North in June is 31.3 ℃ (88.34 ℉). The average lowest temperature is 23.6 ℃ (74.48 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 31.3 ℃ (88.34 ℉). At the end of June you can expect lower temperatures, the average highest temperature is around 31.3 ℃ (88.34 ℉). The average number of rainy days in June is 12. The average rainfall is 111.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:57 (hours and minutes), in the middle of the month 11:56 and at the end of the month 11:56.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in July is this: The average highest temperature in North in July is 31.3 ℃ (88.34 ℉). The average lowest temperature is 22.5 ℃ (72.5 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 31.3 ℃ (88.34 ℉). At the end of July you can expect higher temperatures, the average highest temperature is around 32.35 ℃ (90.23 ℉). The average number of rainy days in July is 9.8. The average rainfall is 88.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:56 (hours and minutes), in the middle of the month 11:57 and at the end of the month 11:58.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in August is this: The average highest temperature in North in August is 33.4 ℃ (92.12 ℉). The average lowest temperature is 23.6 ℃ (74.48 ℉). At the beginning of August you can expect lower temperatures, the average highest temperature is around 32.35 ℃ (90.23 ℉). At the end of August you can expect higher temperatures, the average highest temperature is around 33.65 ℃ (92.57 ℉). The average number of rainy days in August is 7.2. The average rainfall is 57.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 11:58 (hours and minutes), in the middle of the month 12:00 and at the end of the month 12:02.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in September is this: The average highest temperature in North in September is 33.9 ℃ (93.02 ℉). The average lowest temperature is 24.1 ℃ (75.38 ℉). At the beginning of September you can expect lower temperatures, the average highest temperature is around 33.65 ℃ (92.57 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 33.05 ℃ (91.49 ℉). The average number of rainy days in September is 9.1. The average rainfall is 84.8 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:02 (hours and minutes), in the middle of the month 12:04 and at the end of the month 12:07.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in October is this: The average highest temperature in North in October is 32.2 ℃ (89.96 ℉). The average lowest temperature is 23.8 ℃ (74.84 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 33.05 ℃ (91.49 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 32.2 ℃ (89.96 ℉). The average number of rainy days in October is 10.8. The average rainfall is 125.9 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:07 (hours and minutes), in the middle of the month 12:10 and at the end of the month 12:12.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in November is this: The average highest temperature in North in November is 32.2 ℃ (89.96 ℉). The average lowest temperature is 23.6 ℃ (74.48 ℉). At the beginning of November you can expect lower temperatures, the average highest temperature is around 32.2 ℃ (89.96 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 31.6 ℃ (88.88 ℉). The average number of rainy days in November is 12. The average rainfall is 187.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:12 (hours and minutes), in the middle of the month 12:14 and at the end of the month 12:16.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.Typical (usual) weather in North in December is this: The average highest temperature in North in December is 31 ℃ (87.8 ℉). The average lowest temperature is 24.2 ℃ (75.56 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 31.6 ℃ (88.88 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 30.95 ℃ (87.71 ℉). The average number of rainy days in December is 18.1. The average rainfall is 221.2 mm (look here, what this number means). When planning your travel, please, keep in mind, that actual weather may differ from these average values. The length of the day at the beginning of this month is approximately 12:16 (hours and minutes), in the middle of the month 12:17 and at the end of the month 12:18.These numbers above are valid primarily for the capital and the area around it. It is important to say, that the weather may differ significantly in different altitudes, especially in mountains.| Belem | temperature: - | highest temperature: 32.2 ℃ (89.96 ℉) | lowest temperature: 21.7 ℃ (71.06 ℉) | rainfall: 221.7mm | rainy days: 20.2 |
| Boa Vista | temperature: - | highest temperature: 0.2 ℃ (32.36 ℉) | lowest temperature: 0.2 ℃ (32.36 ℉) | rainfall: 0mm | rainy days: 0 |
| Macapa | temperature: - | highest temperature: 32.2 ℃ (89.96 ℉) | lowest temperature: 24.1 ℃ (75.38 ℉) | rainfall: 139.7mm | rainy days: 13.8 |
| Manaus | temperature: - | highest temperature: 31 ℃ (87.8 ℉) | lowest temperature: 24.2 ℃ (75.56 ℉) | rainfall: 221.2mm | rainy days: 18.1 |
| Palmas | temperature: - | highest temperature: 0.2 ℃ (32.36 ℉) | lowest temperature: 0.2 ℃ (32.36 ℉) | rainfall: 0mm | rainy days: 0 |
| Porto Velho | temperature: - | highest temperature: 30.5 ℃ (86.9 ℉) | lowest temperature: 22.4 ℃ (72.32 ℉) | rainfall: 325mm | rainy days: 18.3 |
| Rio Branco | temperature: - | highest temperature: 31.4 ℃ (88.52 ℉) | lowest temperature: 21.9 ℃ (71.42 ℉) | rainfall: 269mm | rainy days: 19.5 |