Current Conditions

Jamestown, Saint Helena

68°F20°C
Partly Cloudy

Wind

ESE 17 mph27 km/h

Humidity

70%

Cloud Cover

66%

As of Friday, July 24, 2026 at 7:07 AM GMT

Today's Outlook

Day

Mostly cloudy and warm, with a high of 70°F21°C. Windy from the ESE at 16 to 17 mph26 to 27 km/h.

Night

Mostly cloudy, with a low around 70°F21°C. Windy from the ESE at 17 mph27 km/h.

7-Day Forecast

DayConditionHigh (°F)Low (°F)Precip (mm)Cloud Cover (%)Wind (mph)
FridayJul 24Partly CloudyHigh 70°F21°CLow 68°F20°CPrecip 0 in0.1 mmCloud 60%Wind ESE 16 mph26 km/hFriday: Mostly cloudy and warm, with a high of 70°F21°C. Windy from the ESE at 16 to 17 mph26 to 27 km/h. Friday Night: Mostly cloudy, with a low around 70°F21°C. Windy from the ESE at 17 mph27 km/h.
SaturdayJul 25CloudyHigh 69°F21°CLow 68°F20°CPrecip 0 in0.1 mmCloud 87%Wind SE 15 mph25 km/hSaturday: Overcast and mild, with a high of 68°F20°C. Windy from the ESE at 15 to 17 mph24 to 27 km/h. Saturday Night: Overcast, with a low around 68°F20°C. Windy from the SE at 16 to 18 mph25 to 29 km/h.
SundayJul 26CloudyHigh 69°F20°CLow 67°F20°CPrecip 0 in0 mmCloud 92%Wind SE 16 mph25 km/hSunday: Overcast and warm, with a high of 69°F20°C. Windy from the SE at 16 to 17 mph25 to 27 km/h. Sunday Night: Overcast, with a low around 67°F20°C. Windy from the SE at 16 mph25 km/h.
MondayJul 27CloudyHigh 69°F20°CLow 68°F20°CPrecip 0 in0.1 mm1%Cloud 85%Wind SE 15 mph25 km/hMonday: Overcast and warm, with a high of 69°F20°C. Windy from the SE at 15 to 16 mph24 to 25 km/h. Monday Night: Overcast, with a low around 68°F20°C. Windy from the SE at 15 to 16 mph25 to 26 km/h.
TuesdayJul 28Partly CloudyHigh 69°F20°CLow 68°F20°CPrecip 0 in0.1 mmCloud 75%Wind SE 13 mph22 km/hTuesday: Mostly cloudy and warm, with a high of 69°F20°C. Breezy from the SE at 13 to 14 mph21 to 23 km/h. Tuesday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the SE at 14 to 15 mph22 to 24 km/h.
WednesdayJul 29Partly CloudyHigh 69°F21°CLow 68°F20°CPrecip 0 in0.1 mmCloud 67%Wind SE 14 mph22 km/hWednesday: Mostly cloudy and warm, with a high of 69°F21°C. Breezy from the SE at 14 to 15 mph22 to 24 km/h. Wednesday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the SE at 14 to 15 mph22 to 24 km/h.
ThursdayJul 30Partly CloudyHigh 69°F21°CLow 68°F20°CPrecip 0.01 in0.3 mm4%Cloud 61%Wind ESE 14 mph23 km/hThursday: Mostly cloudy and warm, with a high of 69°F21°C. Breezy from the ESE at 15 to 16 mph24 to 25 km/h. Thursday Night: Mostly cloudy, with a low around 68°F20°C. Breezy from the SE at 14 to 15 mph23 to 24 km/h.

15-Day Forecast

Day High (°F) Low (°F) Precip (mm) Cloud Cover (%) Condition Wind (mph)

About This Forecast

This forecast is powered by WeatherMesh, the world's most advanced and accurate weather model powered by AI. WeatherMesh is built on proprietary data from WindBorne's Global Sounding Balloon constellation — the world's largest fleet of autonomous, long-duration weather balloons — collecting observations across 100% of Earth, including over oceans and remote regions where no other data exists.

WeatherMesh consistently outperforms legacy models in independent benchmarks. View Benchmarks →

Access WeatherMesh forecasts programmatically via our API. API Documentation →

How to Access Weather Forecasts

PatternExampleDescription
/weather/{country}/{city}//weather/united-states/san-francisco/City forecast (canonical URL)
/weather/{city}//weather/tokyo/Shorthand — redirects to most populous match
/weather/{country}/{region}/{city}//weather/united-states/california/san-francisco/With region — redirects to canonical
/weather/nearby?lat={lat}&lon={lon}/weather/nearby?lat=48.1&lon=11.5Find nearest city by coordinates
/weather/{country}//weather/germany/Country index — all cities by region

Country and city names use lowercase slugs with hyphens (e.g. united-states, san-francisco). Arbitrary city names are supported — if not in our database, we geocode the name and serve the forecast for that location.

For programmatic access, use theWindBorne Forecast APIwhich returns structured JSON for any coordinates worldwide.

Coordinates: 15.9249°S, 5.7182°W·Elevation: 10m·Timezone: Atlantic/St_Helena·Population: 637