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June Weather in St Helena, Australia

Last updated: August 22, 2025

In June, the average temperature in St Helena, Australia is a mild 10°C (50°F). Expect temperatures to range from a cool 1°C (34°F) at night to a comfortable 18°C (65°F) during the day. During this time, the area experiences 54 mm (2.1 in) of precipitation over approximately 9 days, contributing to an average humidity level of 81%. Stay prepared for a blend of refreshing breezes and occasional showers!

June Temperature in St Helena

In June in St Helena, the average temperature is 10°C (50°F), with maximums reaching up to 18°C (65°F) and minimums dipping as low as 1°C (34°F). This makes it a great time for travelers to enjoy mild weather while exploring the local attractions.

June Weather in St Helena: Daily Temperature Highs, Lows, and Averages

The chart illustrates June temperature patterns in St Helena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In St Helena, June typically has an average temperature of 10°C (50°F), with highs reaching up to 18°C (65°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec696766605450495054586265
Data source: Temperature data for St Helena generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

June Precipitation in St Helena

In St Helena in June, the precipitation amount is 54 mm (2.1 in) over a span of 9 days.

June Precipitation Trends in St Helena

The chart displays monthly precipitation patterns in St Helena, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In St Helena, June typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec424440515754465864745874
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in St Helena

In St Helena in June humidity is 81%. With an average temperature of 10°C (50°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable and might leave travelers feeling heavy and lethargic as the moisture clings to their skin.

June Average Humidity in St Helena

This chart illustrates the average monthly humidity levels in St Helena, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in St Helena is approximately 81%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec43%49%60%71%79%82%83%79%72%61%59%50%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in St Helena

In St Helena in June, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in St Helena, you can check the information here.

Maximum UV Index Levels in St Helena for June

The chart shows the monthly maximum UV Index (UVI) for St Helena in June, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In June, the maximum UV index in St Helena typically reaches 3, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14121174335791214
Data source: St Helena June UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How June Weather in St Helena Compares to Other Months

Weather in St Helena varies notably across the year, with each month offering distinct climate conditions. This page compares June’s weather to other months in St Helena, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in St Helena, showing how June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)42 mm (1.6 inches)43%extreme
February Weather19°C (67°F)44 mm (1.7 inches)49%extreme
March Weather19°C (66°F)40 mm (1.6 inches)60%extreme
April Weather15°C (60°F)51 mm (2.0 inches)71%high
May Weather12°C (54°F)57 mm (2.2 inches)79%moderate
June Weather10°C (50°F)54 mm (2.1 inches)81%moderate
July Weather10°C (49°F)46 mm (1.8 inches)83%moderate
August Weather10°C (50°F)58 mm (2.3 inches)79%moderate
September Weather12°C (54°F)64 mm (2.5 inches)72%high
October Weather14°C (58°F)74 mm (2.9 inches)61%very high
November Weather17°C (62°F)58 mm (2.3 inches)59%extreme
December Weather18°C (65°F)74 mm (2.9 inches)50%extreme

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