Jamestown, Saint Helena Weather Information
Local Time
2026-02-08 00:01:12 Greenwich Mean TimeWeather in the past year
Sun & Astronomy
In Jamestown, Saint Helena, today's sunrise time is 06:14, sunset time is 18:59, nautical twilight begins at 05:27, nautical twilight ends at 19:46, astronomical twilight begins at 05:00, astronomical twilight ends at 20:13.
Temperature Analysis
In Jamestown, Saint Helena region, the lowest temperature occurs in August 2025, with an average temperature of about 18.8°C.
The highest temperature occurs in March 2025, with a maximum temperature of up to 23°C.
Based on historical data, the average temperature in January is 22.4°C, February is 22.9°C, March is 23°C, April is 22.8°C, May is 21.6°C, June is 20.2°C, July is 19.5°C, August is 18.8°C, September is 19.2°C, October is 19°C, November is 19.7°C, December is 20.9°C.
Wind Analysis
In Jamestown, Saint Helena region, the lowest wind speed occurs in January 2025, with an average wind speed of about 47.8 km/h.
The highest wind speed occurs in October 2025, with a maximum wind speed of up to 62.3 km/h.
Based on historical data, the average wind speed in January is 47.8 km/h, February is 53.2 km/h, March is 51.7 km/h, April is 51.2 km/h, May is 51.3 km/h, June is 52.8 km/h, July is 55.2 km/h, August is 52 km/h, September is 54 km/h, October is 62.3 km/h, November is 48.5 km/h, December is 47.9 km/h.
Sunshine Duration Analysis
In Jamestown, Saint Helena region, the lowest sunshine duration occurs in July 2025, with an average sunshine duration of about 9.1 hours.
The highest sunshine duration occurs in January 2025, with a maximum sunshine duration of up to 11.7 hours.
Based on historical data, the average sunshine duration in January is 11.7 hours, February is 10.9 hours, March is 10.9 hours, April is 10.6 hours, May is 10.5 hours, June is 9.6 hours, July is 9.1 hours, August is 9.5 hours, September is 9.4 hours, October is 9.3 hours, November is 10.7 hours, December is 11.3 hours.
Precipitation Analysis
In Jamestown, Saint Helena region, the lowest precipitation occurs in November 2025, with an average precipitation of about 0.9 mm.
The highest precipitation occurs in March 2025, with a maximum precipitation of up to 2.3 mm.
Based on historical data, the average precipitation in January is 1.7 mm, February is 2.1 mm, March is 2.3 mm, April is 1.1 mm, May is 1.1 mm, June is 1.5 mm, July is 1.3 mm, August is 1.4 mm, September is 1 mm, October is 1.4 mm, November is 0.9 mm, December is 1.3 mm.