June weather forecast
Saint Helena, Ascension and Tristan da Cunha

June marks the onset of winter in the islands of Saint Helena, Ascension, and Tristan da Cunha, bringing cooler temperatures and significant changes in precipitation.

In Saint Helena, June is a winter month, characterised by lower temperatures, typically ranging from 15°C (59°F) to 23°C (73.4°F). It also marks the onset of the dry season, with rainfall significantly reduced compared to May. Jamestown, the island's capital, mirrors these weather patterns. The transition from June to July will continue the winter trend with temperatures and rainfall expected to decrease further.

Ascension Island, on the other hand, experiences stable temperatures, even in June, typically ranging from 22°C (71.6°F) to 28°C (82.4°F). The rainfall decreases significantly, marking the middle of its dry season. Georgetown, the main settlement on Ascension Island, aligns with these weather patterns. Moving into July, the weather remains relatively consistent, with a minor decrease in both temperature and rainfall.

On Tristan da Cunha, June is a part of the winter season, with temperatures fluctuating between 11°C (51.8°F) and 15°C (59°F). Despite the cooling, the island experiences high rainfall due to its oceanic climate, although there is a slight decrease from May. The main settlement, Edinburgh of the Seven Seas, shares these weather conditions. As the island progresses into July, further decreases in both temperature and rainfall can be expected.

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• Jamestown - June »
  In Jamestown in June, during 6 rainfall days, 18mm (0.71") of precipitation is typically accumulated. With an average of 11h and 12min of daylight, June has the shortest days of the year in Jamestown, Saint Helena, Ascension and Tristan da Cunha.
• Georgetown - June »
  With an average of 11h and 42min of daylight, June has the shortest days of the year in Georgetown, Saint Helena, Ascension and Tristan da Cunha. With an average of 11h and 42min of daylight, June has the shortest days of the year in Georgetown, Saint Helena, Ascension and Tristan da Cunha.
• Longwood - June »
  The month with the most rainfall in Longwood is June, when the rain falls for 13.6 days and typically aggregates up to 11mm (0.43") of precipitation. In Longwood in June, during 13.6 rainfall days, 11mm (0.43") of precipitation is typically accumulated.
• Tristan da Cunha - June »
  With an average of 9h and 42min of daylight, June has the shortest days of the year in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha. In Tristan da Cunha in June, the average water temperature is 15°C (59°F).
• Ascension Island - June »
  The months with the lowest UV index in Ascension Island are June and July, with an average maximum UV index of 9. In Ascension Island, Saint Helena, Ascension and Tristan da Cunha, the average relative humidity in June is 68%.
• Saint Helena Island - June »
  With an average of 11h and 12min of daylight, June has the shortest days of the year in Saint Helena Island, Saint Helena, Ascension and Tristan da Cunha. With an average of 11h and 12min of daylight, June has the shortest days of the year in Saint Helena Island.