Do you need to know, when is the best time to go to British Virgin Islands? Then you should take a look here, what weather you can expect there during the year.
The climate of British Virgin Islands is subtropical, humid, temperatures are moderated by winds. Temperatures vary only little throughout the year, rainfall is quite low, but higher in the hills.
When speaking about the usual weather in this state, the information is relevant for example for these popular places: Anegada, Jost Van Dyke, Road Town, Southern Islands, Tortola, Virgin Gorda.
Let's look now what weather you can expect here. (Warning: As we don't have reliable data for this country, we use data from nearby locations for these statistics.) The warmest month here is August, the average maximum temperature is 31.7 ℃ (89.06 ℉). The average minimum temperature in this month is 25.7 ℃ (78.26 ℉). The coldest month here is January, the average maximum temperature is 28.1 ℃ (82.58 ℉). The average minimum temperature in this month is 23 ℃ (73.4 ℉). The most rainy month here is November, the average number of rainy days is 13.2. The least rainy month here is February, the average number of rainy days is 8.1. 
When travelling to some places in British Virgin Islands, always consider the altitude of the the place as well. The highest point here is Mount Sage (521 m) and the lowest point is Caribbean Sea (0 m). So there are not big differences in altitudes in this country. But the altitude affects the weather even so. 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 British Virgin Islands in January is this: The average highest temperature in British Virgin Islands in January is 28.1 ℃ (82.58 ℉). The average lowest temperature is 23 ℃ (73.4 ℉). At the beginning of January you can expect higher temperatures, the average highest temperature is around 28.2 ℃ (82.76 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 28.3 ℃ (82.94 ℉). The average number of rainy days in January is 10.2. The average rainfall is 56.2 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 11:07 (hours and minutes), in the middle of the month 11:12 and at the end of the month 11:22.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in February is this: The average highest temperature in British Virgin Islands in February is 28.5 ℃ (83.3 ℉). The average lowest temperature is 22.6 ℃ (72.68 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 28.3 ℃ (82.94 ℉). At the end of February you can expect lower temperatures, the average highest temperature is around 28.5 ℃ (83.3 ℉). The average number of rainy days in February is 8.1. The average rainfall is 36.9 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 11:22 (hours and minutes), in the middle of the month 11:34 and at the end of the month 11:48.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in March is this: The average highest temperature in British Virgin Islands in March is 28.5 ℃ (83.3 ℉). The average lowest temperature is 23.2 ℃ (73.76 ℉). At the beginning of March you can expect lower temperatures, the average highest temperature is around 28.5 ℃ (83.3 ℉). At the end of March you can expect higher temperatures, the average highest temperature is around 29.1 ℃ (84.38 ℉). The average number of rainy days in March is 8.1. The average rainfall is 47.3 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.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in April is this: The average highest temperature in British Virgin Islands in April is 29.7 ℃ (85.46 ℉). The average lowest temperature is 23.5 ℃ (74.3 ℉). At the beginning of April you can expect lower temperatures, the average highest temperature is around 29.1 ℃ (84.38 ℉). At the end of April you can expect higher temperatures, the average highest temperature is around 29.95 ℃ (85.91 ℉). The average number of rainy days in April is 9.1. The average rainfall is 68.2 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 12:31 and at the end of the month 12:44.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in May is this: The average highest temperature in British Virgin Islands in May is 30.2 ℃ (86.36 ℉). The average lowest temperature is 25 ℃ (77 ℉). At the beginning of May you can expect lower temperatures, the average highest temperature is around 29.95 ℃ (85.91 ℉). At the end of May you can expect higher temperatures, the average highest temperature is around 30.75 ℃ (87.35 ℉). The average number of rainy days in May is 9.8. The average rainfall is 111.9 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 12:44 (hours and minutes), in the middle of the month 12:55 and at the end of the month 13:04.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in June is this: The average highest temperature in British Virgin Islands in June is 31.3 ℃ (88.34 ℉). The average lowest temperature is 25.4 ℃ (77.72 ℉). At the beginning of June you can expect lower temperatures, the average highest temperature is around 30.75 ℃ (87.35 ℉). At the end of June you can expect lower temperatures, the average highest temperature is around 30.8 ℃ (87.44 ℉). The average number of rainy days in June is 8.1. The average rainfall is 50.5 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 13:04 (hours and minutes), in the middle of the month 13:08 and at the end of the month 13:08.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in July is this: The average highest temperature in British Virgin Islands in July is 30.3 ℃ (86.54 ℉). The average lowest temperature is 25.4 ℃ (77.72 ℉). At the beginning of July you can expect higher temperatures, the average highest temperature is around 30.8 ℃ (87.44 ℉). At the end of July you can expect higher temperatures, the average highest temperature is around 31 ℃ (87.8 ℉). The average number of rainy days in July is 11.3. The average rainfall is 87.3 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 13:08 (hours and minutes), in the middle of the month 13:03 and at the end of the month 12:55.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in August is this: The average highest temperature in British Virgin Islands in August is 31.7 ℃ (89.06 ℉). The average lowest temperature is 25.7 ℃ (78.26 ℉). At the beginning of August you can expect lower temperatures, the average highest temperature is around 31 ℃ (87.8 ℉). At the end of August you can expect lower temperatures, the average highest temperature is around 31.1 ℃ (87.98 ℉). The average number of rainy days in August is 13.1. The average rainfall is 101.1 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 12:55 (hours and minutes), in the middle of the month 12:44 and at the end of the month 12:31.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in September is this: The average highest temperature in British Virgin Islands in September is 30.5 ℃ (86.9 ℉). The average lowest temperature is 25.4 ℃ (77.72 ℉). At the beginning of September you can expect higher temperatures, the average highest temperature is around 31.1 ℃ (87.98 ℉). At the end of September you can expect higher temperatures, the average highest temperature is around 30.85 ℃ (87.53 ℉). The average number of rainy days in September is 10.8. The average rainfall is 139.2 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 12:31 (hours and minutes), in the middle of the month 12:17 and at the end of the month 12:02.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in October is this: The average highest temperature in British Virgin Islands in October is 31.2 ℃ (88.16 ℉). The average lowest temperature is 24 ℃ (75.2 ℉). At the beginning of October you can expect lower temperatures, the average highest temperature is around 30.85 ℃ (87.53 ℉). At the end of October you can expect lower temperatures, the average highest temperature is around 30.2 ℃ (86.36 ℉). The average number of rainy days in October is 13.1. The average rainfall is 129.7 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 12:02 (hours and minutes), in the middle of the month 11:48 and at the end of the month 11:34.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in November is this: The average highest temperature in British Virgin Islands in November is 29.2 ℃ (84.56 ℉). The average lowest temperature is 24.4 ℃ (75.92 ℉). At the beginning of November you can expect higher temperatures, the average highest temperature is around 30.2 ℃ (86.36 ℉). At the end of November you can expect lower temperatures, the average highest temperature is around 28.75 ℃ (83.75 ℉). The average number of rainy days in November is 13.2. The average rainfall is 131.7 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 11:34 (hours and minutes), in the middle of the month 11:22 and at the end of the month 11:13.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.Typical (usual) weather in British Virgin Islands in December is this: The average highest temperature in British Virgin Islands in December is 28.3 ℃ (82.94 ℉). The average lowest temperature is 23 ℃ (73.4 ℉). At the beginning of December you can expect higher temperatures, the average highest temperature is around 28.75 ℃ (83.75 ℉). At the end of December you can expect lower temperatures, the average highest temperature is around 28.2 ℃ (82.76 ℉). The average number of rainy days in December is 13. The average rainfall is 86.8 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 11:13 (hours and minutes), in the middle of the month 11:07 and at the end of the month 11:06.This data is approximate because we do not have exact data for this country. It is important to say, that the weather may differ significantly in different altitudes.