Do you need to know, when is the best time to go to Comoros? Then you should take a look here, what weather you can expect there during the year.
The climate of Comoros is tropical marine, rainy season is from November to May. There are only small variations of temperature throughout the year. The climate on Mayotte is slightly warmer and drier.
When speaking about the usual weather in this state, the information is relevant for example for these popular places: Anjouan, Grand Comore, Hamavouna, Hoani, Moheli, Moroni, Nioumachoua.
Let's look now what weather you can expect in the area around the capital and in many other cities. The warmest month here is April, the average maximum temperature is 31.1 ℃ (87.98 ℉). The average minimum temperature in this month is 22.5 ℃ (72.5 ℉). The coldest month here is September, the average maximum temperature is 27.9 ℃ (82.22 ℉). The average minimum temperature in this month is 19.4 ℃ (66.92 ℉). The most rainy month here is March, the average number of rainy days is 17.9. The least rainy month here is August, the average number of rainy days is 10.1. 
When travelling to some places in Comoros, always consider the altitude of the the place as well. The highest point here is Karthala (2360 m) and the lowest point is Indian 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 Comoros in January is this: The average highest temperature in Comoros in January is 30.8 ℃ (87.44 ℉). The average lowest temperature is 23.3 ℃ (73.94 ℉). At the beginning of January you can expect lower temperatures, the average highest temperature is around 30.8 ℃ (87.44 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 30.85 ℃ (87.53 ℉). The average number of rainy days in January is 17.7. The average rainfall is 362.4 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 12:48 (hours and minutes), in the middle of the month 12:44 and at the end of the month 12:37.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 Comoros in February is this: The average highest temperature in Comoros in February is 30.9 ℃ (87.62 ℉). The average lowest temperature is 23.1 ℃ (73.58 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 30.85 ℃ (87.53 ℉). At the end of February you can expect lower temperatures, the average highest temperature is around 30.7 ℃ (87.26 ℉). The average number of rainy days in February is 15.8. The average rainfall is 298.6 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 12:37 (hours and minutes), in the middle of the month 12:28 and at the end of the month 12:19.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 Comoros in March is this: The average highest temperature in Comoros in March is 30.5 ℃ (86.9 ℉). The average lowest temperature is 22.9 ℃ (73.22 ℉). At the beginning of March you can expect higher temperatures, the average highest temperature is around 30.7 ℃ (87.26 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 30.8 ℃ (87.44 ℉). The average number of rainy days in March is 17.9. The average rainfall is 285.1 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 12:19 (hours and minutes), in the middle of the month 12:09 and at the end of the month 11:59.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 Comoros in April is this: The average highest temperature in Comoros in April is 31.1 ℃ (87.98 ℉). The average lowest temperature is 22.5 ℃ (72.5 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 30.8 ℃ (87.44 ℉). At the end of April you can expect lower temperatures, the average highest temperature is around 30.25 ℃ (86.45 ℉). The average number of rainy days in April is 17.8. The average rainfall is 321.4 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 11:59 (hours and minutes), in the middle of the month 11:50 and at the end of the month 11:41.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 Comoros in May is this: The average highest temperature in Comoros in May is 29.4 ℃ (84.92 ℉). The average lowest temperature is 21.4 ℃ (70.52 ℉). At the beginning of May you can expect higher temperatures, the average highest temperature is around 30.25 ℃ (86.45 ℉). At the end of May you can expect lower temperatures, the average highest temperature is around 28.75 ℃ (83.75 ℉). The average number of rainy days in May is 12. The average rainfall is 260.5 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 11:41 (hours and minutes), in the middle of the month 11:34 and at the end of the month 11:29.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 Comoros in June is this: The average highest temperature in Comoros in June is 28.1 ℃ (82.58 ℉). The average lowest temperature is 20.1 ℃ (68.18 ℉). At the beginning of June you can expect higher temperatures, the average highest temperature is around 28.75 ℃ (83.75 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 28.2 ℃ (82.76 ℉). The average number of rainy days in June is 11.9. The average rainfall is 269.1 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 11:29 (hours and minutes), in the middle of the month 11:26 and at the end of the month 11:26.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 Comoros in July is this: The average highest temperature in Comoros in July is 28.3 ℃ (82.94 ℉). The average lowest temperature is 19 ℃ (66.2 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 28.2 ℃ (82.76 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 28.15 ℃ (82.67 ℉). The average number of rainy days in July is 12. The average rainfall is 246 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 11:26 (hours and minutes), in the middle of the month 11:29 and at the end of the month 11:34.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 Comoros in August is this: The average highest temperature in Comoros in August is 28 ℃ (82.4 ℉). The average lowest temperature is 19 ℃ (66.2 ℉). At the beginning of August you can expect higher temperatures, the average highest temperature is around 28.15 ℃ (82.67 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 27.95 ℃ (82.31 ℉). The average number of rainy days in August is 10.1. The average rainfall is 148.6 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 11:34 (hours and minutes), in the middle of the month 11:42 and at the end of the month 11:50.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 Comoros in September is this: The average highest temperature in Comoros in September is 27.9 ℃ (82.22 ℉). The average lowest temperature is 19.4 ℃ (66.92 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 27.95 ℃ (82.31 ℉). At the end of September you can expect higher temperatures, the average highest temperature is around 28.4 ℃ (83.12 ℉). The average number of rainy days in September is 10.7. The average rainfall is 105.7 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 11:50 (hours and minutes), in the middle of the month 11:59 and at the end of the month 12:09.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 Comoros in October is this: The average highest temperature in Comoros in October is 28.9 ℃ (84.02 ℉). The average lowest temperature is 20.6 ℃ (69.08 ℉). At the beginning of October you can expect lower temperatures, the average highest temperature is around 28.4 ℃ (83.12 ℉). At the end of October you can expect higher temperatures, the average highest temperature is around 29.8 ℃ (85.64 ℉). The average number of rainy days in October is 11.9. The average rainfall is 95.6 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 12:09 (hours and minutes), in the middle of the month 12:19 and at the end of the month 12:28.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 Comoros in November is this: The average highest temperature in Comoros in November is 30.7 ℃ (87.26 ℉). The average lowest temperature is 22.2 ℃ (71.96 ℉). At the beginning of November you can expect lower temperatures, the average highest temperature is around 29.8 ℃ (85.64 ℉). At the end of November you can expect higher temperatures, the average highest temperature is around 30.75 ℃ (87.35 ℉). The average number of rainy days in November is 11.8. The average rainfall is 109.8 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 12:28 (hours and minutes), in the middle of the month 12:37 and at the end of the month 12:43.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 Comoros in December is this: The average highest temperature in Comoros in December is 30.8 ℃ (87.44 ℉). The average lowest temperature is 22.7 ℃ (72.86 ℉). At the beginning of December you can expect lower temperatures, the average highest temperature is around 30.75 ℃ (87.35 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 30.8 ℃ (87.44 ℉). The average number of rainy days in December is 15.7. The average rainfall is 220.8 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 12:43 (hours and minutes), in the middle of the month 12:47 and at the end of the month 12:48.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.