Do you need to know, when is the best time to go to Cape Verde? Then you should take a look here, what weather you can expect there during the year.
The climate of Cape Verde is temperate, you can expect warm, dry summers, and a bit colder winters. Precipitation is meager and extremely irregular. There are sometimes dusty clouds coming from Sahara during the winter.
When speaking about the usual weather in this state, the information is relevant for example for these popular places: Boa Vista, Chã das Caldeiras, Cidade Velha, Fogo, Maio, Mindelo, Praia, Sal, Santiago, Santo Antão, São Filipe, São Vicente.
Let's look now what weather you can expect here. The warmest month here is September, the average temperature is 27.4 ℃ (81.32 ℉). The coldest month here is February, the average temperature is 21.2 ℃ (70.16 ℉). The most rainy month here is September, the average number of rainy days is 3. The least rainy month here is April, the average number of rainy days is 0. 
When travelling to some places in Cape Verde, always consider the altitude of the the place as well. The highest point here is Mt. Fogo (2829 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 Cape Verde in January is this: The average temperature in Cape Verde in January is 21.7 ℃ (71.06 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 22.05 ℃ (71.69 ℉). At the end of January you can expect lower temperatures, the average highest temperature is around 21.45 ℃ (70.61 ℉). The average number of rainy days in January is 1. The average rainfall is 5.4 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 11:08 (hours and minutes), in the middle of the month 11:14 and at the end of the month 11:23.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 Cape Verde in February is this: The average temperature in Cape Verde in February is 21.2 ℃ (70.16 ℉). At the beginning of February you can expect higher temperatures, the average highest temperature is around 21.45 ℃ (70.61 ℉). At the end of February you can expect higher temperatures, the average highest temperature is around 21.25 ℃ (70.25 ℉). The average number of rainy days in February is 1. The average rainfall is 3.8 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 11:23 (hours and minutes), in the middle of the month 11:35 and at the end of the month 11:48.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.Typical (usual) weather in Cape Verde in March is this: The average temperature in Cape Verde in March is 21.3 ℃ (70.34 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 21.25 ℃ (70.25 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 21.85 ℃ (71.33 ℉). The average number of rainy days in March is 1. The average rainfall is 1.3 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 11:48 (hours and minutes), in the middle of the month 12:02 and at the end of the month 12:17.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 Cape Verde in April is this: The average temperature in Cape Verde in April is 22.4 ℃ (72.32 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 21.85 ℃ (71.33 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 22.6 ℃ (72.68 ℉). The average number of rainy days in April is 0. The average rainfall is 0 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 12:30 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 Cape Verde in May is this: The average temperature in Cape Verde in May is 22.8 ℃ (73.04 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 22.6 ℃ (72.68 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 23.35 ℃ (74.03 ℉). The average number of rainy days in May is 0. The average rainfall is 0 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 12:54 and at the end of the month 13:02.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 Cape Verde in June is this: The average temperature in Cape Verde in June is 23.9 ℃ (75.02 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 23.35 ℃ (74.03 ℉). At the end of June you can expect higher temperatures, the average highest temperature is around 24.05 ℃ (75.29 ℉). The average number of rainy days in June is 0. The average rainfall is 0 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 13:02 (hours and minutes), in the middle of the month 13:07 and at the end of the month 13:06.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 Cape Verde in July is this: The average temperature in Cape Verde in July is 24.2 ℃ (75.56 ℉). At the beginning of July you can expect lower temperatures, the average highest temperature is around 24.05 ℃ (75.29 ℉). At the end of July you can expect higher temperatures, the average highest temperature is around 25.1 ℃ (77.18 ℉). The average number of rainy days in July is 0. The average rainfall is 0.8 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 13:06 (hours and minutes), in the middle of the month 13:02 and at the end of the month 12:54.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 Cape Verde in August is this: The average temperature in Cape Verde in August is 26 ℃ (78.8 ℉). At the beginning of August you can expect lower temperatures, the average highest temperature is around 25.1 ℃ (77.18 ℉). At the end of August you can expect higher temperatures, the average highest temperature is around 26.7 ℃ (80.06 ℉). The average number of rainy days in August is 2. The average rainfall is 13.9 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 12:54 (hours and minutes), in the middle of the month 12:43 and at the end of the month 12:30.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 Cape Verde in September is this: The average temperature in Cape Verde in September is 27.4 ℃ (81.32 ℉). At the beginning of September you can expect lower temperatures, the average highest temperature is around 26.7 ℃ (80.06 ℉). At the end of September you can expect lower temperatures, the average highest temperature is around 27 ℃ (80.6 ℉). The average number of rainy days in September is 3. The average rainfall is 33.5 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 12:30 (hours and minutes), in the middle of the month 12:16 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 Cape Verde in October is this: The average temperature in Cape Verde in October is 26.6 ℃ (79.88 ℉). At the beginning of October you can expect higher temperatures, the average highest temperature is around 27 ℃ (80.6 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 25.5 ℃ (77.9 ℉). The average number of rainy days in October is 1. The average rainfall is 6.5 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 12:02 (hours and minutes), in the middle of the month 11:48 and at the end of the month 11:35.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 Cape Verde in November is this: The average temperature in Cape Verde in November is 24.4 ℃ (75.92 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 25.5 ℃ (77.9 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 23.4 ℃ (74.12 ℉). The average number of rainy days in November is 1. The average rainfall is 2.5 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 11:35 (hours and minutes), in the middle of the month 11:23 and at the end of the month 11:14.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 Cape Verde in December is this: The average temperature in Cape Verde in December is 22.4 ℃ (72.32 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 23.4 ℃ (74.12 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 22.05 ℃ (71.69 ℉). The average number of rainy days in December is 0. The average rainfall is 1.6 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 11:14 (hours and minutes), in the middle of the month 11:08 and at the end of the month 11:07.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.