Do you need to know, when is the best time to go to Bouvet Island? Then you should take a look here, what weather you can expect there during the year.
The climate of Bouvet Island is antarctic, you can expect heavy clouds and fog. Mean temperature is very low here around the year, you can experience here weak west winds.
When speaking about the usual weather in this state, the information is relevant for example for these popular places: Bouvet Island.
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 February, the average maximum temperature is 18.1 ℃ (64.58 ℉). The average minimum temperature in this month is 12.4 ℃ (54.32 ℉). The coldest month here is August, the average maximum temperature is 11.9 ℃ (53.42 ℉). The average minimum temperature in this month is 6.9 ℃ (44.42 ℉). 
When travelling to some places in Bouvet Island, always consider the altitude of the the place as well. The highest point here is Olavtoppen (Olav Peak) (780 m) and the lowest point is South Atlantic Ocean (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 Bouvet Island in January is this: The average highest temperature in Bouvet Island in January is 18 ℃ (64.4 ℉). The average lowest temperature is 11.5 ℃ (52.7 ℉). At the beginning of January you can expect lower temperatures, the average highest temperature is around 17.4 ℃ (63.32 ℉). At the end of January you can expect higher temperatures, the average highest temperature is around 18.05 ℃ (64.49 ℉). The average rainfall is 210.7 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 14:59 (hours and minutes), in the middle of the month 14:42 and at the end of the month 14:14.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 Bouvet Island in February is this: The average highest temperature in Bouvet Island in February is 18.1 ℃ (64.58 ℉). The average lowest temperature is 12.4 ℃ (54.32 ℉). At the beginning of February you can expect lower temperatures, the average highest temperature is around 18.05 ℃ (64.49 ℉). At the end of February you can expect lower temperatures, the average highest temperature is around 17.85 ℃ (64.13 ℉). The average rainfall is 186.9 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 14:14 (hours and minutes), in the middle of the month 13:39 and at the end of the month 13:00.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 Bouvet Island in March is this: The average highest temperature in Bouvet Island in March is 17.6 ℃ (63.68 ℉). The average lowest temperature is 11.7 ℃ (53.06 ℉). At the beginning of March you can expect higher temperatures, the average highest temperature is around 17.85 ℃ (64.13 ℉). At the end of March you can expect lower temperatures, the average highest temperature is around 16.8 ℃ (62.24 ℉). The average rainfall is 250.8 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 13:00 (hours and minutes), in the middle of the month 12:20 and at the end of the month 11:39.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 Bouvet Island in April is this: The average highest temperature in Bouvet Island in April is 16 ℃ (60.8 ℉). The average lowest temperature is 10.8 ℃ (51.44 ℉). At the beginning of April you can expect higher temperatures, the average highest temperature is around 16.8 ℃ (62.24 ℉). At the end of April you can expect lower temperatures, the average highest temperature is around 15.1 ℃ (59.18 ℉). The average rainfall is 279.7 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 11:39 (hours and minutes), in the middle of the month 11:01 and at the end of the month 10:25.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 Bouvet Island in May is this: The average highest temperature in Bouvet Island in May is 14.2 ℃ (57.56 ℉). The average lowest temperature is 9.3 ℃ (48.74 ℉). At the beginning of May you can expect higher temperatures, the average highest temperature is around 15.1 ℃ (59.18 ℉). At the end of May you can expect lower temperatures, the average highest temperature is around 13.65 ℃ (56.57 ℉). The average rainfall is 288.9 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 10:25 (hours and minutes), in the middle of the month 9:54 and at the end of the month 9:31.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 Bouvet Island in June is this: The average highest temperature in Bouvet Island in June is 13.1 ℃ (55.58 ℉). The average lowest temperature is 8.3 ℃ (46.94 ℉). At the beginning of June you can expect higher temperatures, the average highest temperature is around 13.65 ℃ (56.57 ℉). At the end of June you can expect lower temperatures, the average highest temperature is around 12.55 ℃ (54.59 ℉). The average rainfall is 316.2 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 9:31 (hours and minutes), in the middle of the month 9:18 and at the end of the month 9:19.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 Bouvet Island in July is this: The average highest temperature in Bouvet Island in July is 12 ℃ (53.6 ℉). The average lowest temperature is 7.2 ℃ (44.96 ℉). At the beginning of July you can expect higher temperatures, the average highest temperature is around 12.55 ℃ (54.59 ℉). At the end of July you can expect lower temperatures, the average highest temperature is around 11.95 ℃ (53.51 ℉). The average rainfall is 277.8 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 9:19 (hours and minutes), in the middle of the month 9:32 and at the end of the month 9:55.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 Bouvet Island in August is this: The average highest temperature in Bouvet Island in August is 11.9 ℃ (53.42 ℉). The average lowest temperature is 6.9 ℃ (44.42 ℉). At the beginning of August you can expect higher temperatures, the average highest temperature is around 11.95 ℃ (53.51 ℉). At the end of August you can expect higher temperatures, the average highest temperature is around 12.1 ℃ (53.78 ℉). The average rainfall is 297.6 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 9:55 (hours and minutes), in the middle of the month 10:26 and at the end of the month 11:02.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 Bouvet Island in September is this: The average highest temperature in Bouvet Island in September is 12.3 ℃ (54.14 ℉). The average lowest temperature is 7.3 ℃ (45.14 ℉). At the beginning of September you can expect lower temperatures, the average highest temperature is around 12.1 ℃ (53.78 ℉). At the end of September you can expect higher temperatures, the average highest temperature is around 12.85 ℃ (55.13 ℉). The average rainfall is 273.2 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 11:02 (hours and minutes), in the middle of the month 11:40 and at the end of the month 12:20.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 Bouvet Island in October is this: The average highest temperature in Bouvet Island in October is 13.4 ℃ (56.12 ℉). The average lowest temperature is 8.5 ℃ (47.3 ℉). At the beginning of October you can expect lower temperatures, the average highest temperature is around 12.85 ℃ (55.13 ℉). At the end of October you can expect higher temperatures, the average highest temperature is around 14.35 ℃ (57.83 ℉). The average rainfall is 28.7 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 12:20 (hours and minutes), in the middle of the month 12:59 and at the end of the month 13:38.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 Bouvet Island in November is this: The average highest temperature in Bouvet Island in November is 15.3 ℃ (59.54 ℉). The average lowest temperature is 9.8 ℃ (49.64 ℉). At the beginning of November you can expect lower temperatures, the average highest temperature is around 14.35 ℃ (57.83 ℉). At the end of November you can expect higher temperatures, the average highest temperature is around 16.05 ℃ (60.89 ℉). The average rainfall is 25.6 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 13:38 (hours and minutes), in the middle of the month 14:13 and at the end of the month 14:42.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 Bouvet Island in December is this: The average highest temperature in Bouvet Island in December is 16.8 ℃ (62.24 ℉). The average lowest temperature is 10.7 ℃ (51.26 ℉). At the beginning of December you can expect lower temperatures, the average highest temperature is around 16.05 ℃ (60.89 ℉). At the end of December you can expect higher temperatures, the average highest temperature is around 17.4 ℃ (63.32 ℉). The average rainfall is 240.9 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 14:42 (hours and minutes), in the middle of the month 14:59 and at the end of the month 15:02.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.