June weather forecast
Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha

June is marked by a lower temperature range while rainfall encounters a steadily high level of 160mm (6.3"). The least amount of daylight i.e., 9.6 hours, paired with the least volume of sunshine are the noticeable characteristics of June’s weather. The holding pattern in this month clearly aligns with the changing time of the year. The onset of winter is subtly announced by the sprawling marine expanse as the sea temperature falls further, painting a serene picture of the chilly months ahead.

Temperature

June in Tristan da Cunha begins with an average high-temperature of a mild 15°C (59°F), reflecting close similarity to the preceding month. In Tristan da Cunha, a slight decrease from the daytime peak is noted during the month of June, with an average low-temperature of 11°C (51.8°F).

Rainfall

In Tristan da Cunha, in June, it is raining for 23 days, with typically 160mm (6.3") of accumulated precipitation. Throughout the year, in Tristan da Cunha, there are 251 rainfall days, and 1681mm (66.18") of precipitation is accumulated.

Sea temperature

In Tristan da Cunha, in June, the average water temperature is 15°C (59°F).
Note: Most people find swimming in 15°C (59°F) unenjoyable. As the water temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes harder.

Daylight

With an average of 9h and 42min of daylight, June has the shortest days of the year in Tristan da Cunha.
On the first day of the month, sunrise is at 07:54 and sunset at 17:40. On the last day of June, sunrise is at 08:03 and sunset at 17:42 GMT.

Sunshine

June has the least sunshine of the year, with an average of 3.3h of sunshine.

UV index

June and July, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The UV index of 2 during June translates into the following guidance:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.