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Live forecasts update automatically; written guidance last reviewed 23 June 2026 by the Aussie Report Weather Desk. Data from the Bureau of Meteorology (BOM) and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
St Helena currently experiences temperatures from the live forecast above, with the island’s subtropical climate delivering mild winters and warm, humid summers. Mean maximums range 20–28°C, and rainfall peaks between December and April.
What is the typical weather pattern for St Helena?
St Helena sits in the South Atlantic, so its weather is driven by the southeast trade winds year-round. Summer (December–March) averages 25–28°C with higher humidity and frequent showers. Winter (June–September) brings cooler, drier conditions, with daytime highs near 20–23°C and overnight lows around 15–17°C. The island’s rugged terrain creates localised microclimates, meaning the interior can be noticeably cooler and wetter than the coast.
How does St Helena compare to other locations in the region?
Unlike mainland Australian cities such as Perth weather or Adelaide weather, St Helena lacks extreme heat because of its isolated ocean position. For travellers comparing Hobart weather or Launceston weather, St Helena is warmer year-round. A check of the Australia weather hub shows most southern Australian capitals have cooler winters than St Helena’s mild season.
What is the best time of year to visit St Helena?
April to October offers comfortable temperatures between 20–26°C and lower humidity, making it ideal for outdoor activities. Avoid December–February if you dislike humid, showery afternoons.
Does St Helena experience cyclones or severe storms?
No. The island lies outside tropical cyclone belts. Severe storms are rare; occasional strong trade-wind gusts occur in winter, but no cyclone threat exists.
How accurate are the live forecasts for St Helena?
Satellite and model coverage is good, but the island’s isolated location can cause rapid local cloud changes. The live forecast above provides reliable 3–5 day guidance; check severe weather warning updates for any anomalous events.
Sources
For more specific coastal outlooks, refer to Brisbane weather, Sydney weather, or Melbourne weather for direct Australian comparisons.