July weather forecast
Saint Helena, Ascension and Tristan da Cunha

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Flag of Saint Helena, Ascension and Tristan da Cunha
Flag of Saint Helena, Ascension and Tristan da Cunha

Weather in July

July brings the peak of winter to the islands of Saint Helena, Ascension, and Tristan da Cunha, with varying degrees of cooling and changes in precipitation.

In Saint Helena, July is the coolest month of the year, with temperatures typically ranging from 14°C (57.2°F) to 21°C (69.8°F). Rainfall is minimal, marking the peak of the dry season. The capital, Jamestown, shares these climatic conditions. As the island transitions from July to August, there will be a slight increase in temperatures and rainfall, signaling the end of the dry season.

Ascension Island continues to maintain steady temperatures, even in July, ranging from 22°C (71.6°F) to 28°C (82.4°F). Rainfall is at its lowest, with the dry season in full swing. Georgetown, the island's main settlement, reflects these weather patterns. Moving into August, there is a slight increase in both temperature and rainfall, marking the beginning of the transition to the wetter season.

On Tristan da Cunha, July is the coldest month, with temperatures fluctuating between 10°C (50°F) and 14°C (57.2°F). Despite this cooling, the island experiences significant rainfall, albeit slightly less than in June due to its oceanic climate. The main settlement, Edinburgh of the Seven Seas, experiences similar weather conditions. Transitioning into August, temperatures and rainfall begin to increase gradually, signifying the end of the peak winter season.

  • Jamestown - July »
    On the first day of July in Jamestown sunrise is at 06:50 and sunset at 18:02. In Jamestown during July, the rain falls for 8 days and regularly aggregates up to 8mm (0.31") of precipitation.
  • Georgetown - July »
    In Georgetown during July, the rain falls for 17 days and regularly aggregates up to 20mm (0.79") of precipitation. In Georgetown the average relative humidity in July is 75%.
  • Longwood - July »
    In Longwood in July, it is raining for 13.1 days, with typically 9mm (0.35") of accumulated precipitation. In Longwood the average day length in July is 11h and 17min.
  • Tristan da Cunha - July »
    The months with the lowest UV index in Tristan da Cunha are June and July, with an average maximum UV index of 2. In July, in Tristan da Cunha, Saint Helena, Ascension and Tristan da Cunha, the rain falls for 25 days.
  • Ascension Island - July »
    July is the least humid month in Ascension Island, Saint Helena, Ascension and Tristan da Cunha, with an average relative humidity of 67%. The least humid month in Ascension Island is July, with an average relative humidity of 67%.
  • Saint Helena Island - July »
    June and July, with an average of 16h of sunshine, are months with the most sunshine in Saint Helena Island, Saint Helena, Ascension and Tristan da Cunha. On the first day of July in Saint Helena Island, Saint Helena, Ascension and Tristan da Cunha, sunrise is at 06:50 and sunset at 18:02.

Saint Helena, Ascension and Tristan da Cunha

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