January weather forecast
Saint Helena, Ascension and Tristan da Cunha

Saint Helena, Ascension and Tristan da Cunha - most visited locations

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

Weather in January

January, the first month of the year, brings distinctive weather conditions to Saint Helena, Ascension, and Tristan da Cunha.

In Saint Helena, January marks the middle of the summer season. It is generally the warmest month, with temperatures frequently reaching up to 27°C (80.6°F). There is a significant increase in precipitation compared to the dry winter months. In comparison to December, the temperature and rainfall remain relatively constant, while in February, visitors can expect a slight decrease in temperature and rainfall. Jamestown, the capital of Saint Helena, shares these climatic conditions.

Ascension Island, located near the equator, also experiences warm temperatures in January, ranging from 24°C (75.2°F) to 30°C (86°F). However, it is one of the wettest months of the year, due to the beginning of the rainy season. Georgetown, the island's capital, experiences these weather patterns. The weather in January is similar to that of February but presents a notable increase in rainfall compared to the preceding dry month of December.

Tristan da Cunha observes January as the middle of its summer season. However, due to its oceanic climate, temperatures are generally cooler than on the other islands, fluctuating between 14°C (57.2°F) to 19°C (66.2°F). Precipitation remains high in January, which is typical for Tristan da Cunha, given its absence of a defined dry season. As we move to February, rainfall decreases slightly, and temperatures maintain a consistent range. The island's main settlement, Edinburgh of the Seven Seas, follows this weather pattern.

  • Jamestown - January »
    In Jamestown, Saint Helena, Ascension and Tristan da Cunha, in January, during 4 rainfall days, 8mm (0.31") of precipitation is typically accumulated. Known as the heart of the Southern Hemisphere summer, January is typically hot in Jamestown, Saint Helena, Ascension, and Tristan da Cunha.
  • Georgetown - January »
    January and February are months with the least rain in Georgetown when the rain falls for 9.1 days and typically aggregates up to 8mm (0.31") of rain. January through May, with an average maximum UV index of 7, are months with the highest UV index in Georgetown, Saint Helena, Ascension and Tristan da Cunha.
  • Longwood - January »
    In Longwood in January, it is raining for 9.8 days, with typically 8mm (0.31") of accumulated precipitation. In Saint Helena, Ascension and Tristan da Cunha's region of Longwood, January is the start of the year and characterised by moderate precipitation and UV Index.
  • Tristan da Cunha - January »
    The month with the least rainfall in Tristan da Cunha is January, when the rain falls for 18 days and typically collects 93mm (3.66") of precipitation. January is the month with the highest UV index in Tristan da Cunha with an average maximum UV index of 12.
  • Ascension Island - January »
    The months with the least rainfall in Ascension Island are January, November and December Rain falls for 2 days and accumulates 4mm (0.16") of rain. With an average relative humidity of 70%, January is the most humid month in Ascension Island, Saint Helena, Ascension and Tristan da Cunha.
  • Saint Helena Island - January »
    The months with the highest UV index in Saint Helena Island are January through March, October through December, with an average maximum UV index of 12. In Saint Helena Island, Saint Helena, Ascension and Tristan da Cunha, the average seawater temperature in January is 23°C (73.4°F).
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Saint Helena, Ascension and Tristan da Cunha

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