Current Conditions

Jamestown, Saint Helena

67°F20°C

Partly Cloudy

Wind

ESE 12 mph19 km/h

Humidity

69%

Cloud Cover

82%

As of Tuesday, September 8, 2026 at 8:23 PM GMT

Today's Outlook

Night

Mostly cloudy, with a low around 67°F19°C. Windy from the SE at 15 to 17 mph23 to 27 km/h.

7-Day Forecast

Condition	High (°F)	Low (°F)	Precip (mm)	Cloud Cover (%)	Wind (mph)
Partly Cloudy	High 68°F20°C	Low 67°F19°C	Precip 0.02 in0.5 mm2%	Cloud 77%	Wind SE 15 mph24 km/h	Wednesday: Overcast and warm, with a high of 68°F20°C. Windy from the SE at 16 to 17 mph25 to 27 km/h. Wednesday Night: Mostly cloudy, with a low around 67°F19°C. Windy from the SE at 15 to 17 mph23 to 27 km/h.
Partly Cloudy	High 68°F20°C	Low 67°F20°C	Precip 0.02 in0.5 mm3%	Cloud 61%	Wind SE 16 mph25 km/h	Thursday: Mostly cloudy and warm, with a high of 68°F20°C. Windy from the SE at 16 to 17 mph25 to 28 km/h. Thursday Night: Mostly cloudy, with a low around 67°F20°C. Windy from the SE at 16 to 17 mph25 to 27 km/h.
Partly Cloudy	High 68°F20°C	Low 67°F20°C	Precip 0.02 in0.5 mm4%	Cloud 49%	Wind SE 15 mph24 km/h	Friday: Partly cloudy and warm, with a high of 68°F20°C. Windy from the SE at 15 to 17 mph24 to 27 km/h. Friday Night: Mostly cloudy, with a low around 67°F20°C. Windy from the SSE at 15 to 16 mph24 to 26 km/h.
Partly Cloudy	High 69°F20°C	Low 68°F20°C	Precip 0.01 in0.3 mm2%	Cloud 52%	Wind SSE 16 mph26 km/h	Saturday: Mostly cloudy and warm, with a high of 69°F20°C. Windy from the SSE at 16 to 18 mph26 to 28 km/h. Saturday Night: Partly cloudy, with a low around 68°F20°C. Windy from the SSE at 16 to 17 mph25 to 27 km/h.
Partly Cloudy	High 68°F20°C	Low 67°F19°C	Precip 0 in0.1 mm—	Cloud 61%	Wind SE 12 mph20 km/h	Sunday: Mostly cloudy and warm, with a high of 68°F20°C. Breezy from the SE at 13 to 15 mph20 to 24 km/h. Sunday Night: Mostly cloudy, with a low around 67°F20°C. Breezy from the SE at 12 to 15 mph19 to 24 km/h.
Partly Cloudy	High 68°F20°C	Low 67°F20°C	Precip 0 in0 mm—	Cloud 73%	Wind ESE 11 mph17 km/h	Monday: Mostly cloudy and warm, with a high of 68°F20°C. Breezy from the ESE at 11 to 12 mph18 to 19 km/h. Monday Night: Mostly cloudy, with a low around 67°F20°C. Breezy from the SE at 10 to 11 mph16 to 18 km/h.
Cloudy	High 68°F20°C	Low 67°F19°C	Precip 0.01 in0.2 mm1%	Cloud 85%	Wind ESE 15 mph24 km/h	Tuesday: Overcast and mild, with a high of 68°F20°C. Breezy from the ESE at 15 to 16 mph24 to 25 km/h. Tuesday Night: Overcast, with a low around 67°F20°C. Windy from the ESE at 14 to 17 mph23 to 27 km/h.

15-Day Forecast

	Day	High	Low	Precip	Cloud Cover	Condition	Wind
	WednesdaySep 9	68°F20°C	67°F19°C	0.02 in0.5 mm· 2%	77%	Partly Cloudy	SE 15 mph24 km/h
DayOvercast and warm, with a high of 68°F20°C. Windy from the SE at 16 to 17 mph25 to 27 km/h. NightMostly cloudy, with a low around 67°F19°C. Windy from the SE at 15 to 17 mph23 to 27 km/h.
	ThursdaySep 10	68°F20°C	67°F20°C	0.02 in0.5 mm· 3%	61%	Partly Cloudy	SE 16 mph25 km/h
DayMostly cloudy and warm, with a high of 68°F20°C. Windy from the SE at 16 to 17 mph25 to 28 km/h. NightMostly cloudy, with a low around 67°F20°C. Windy from the SE at 16 to 17 mph25 to 27 km/h.
	FridaySep 11	68°F20°C	67°F20°C	0.02 in0.5 mm· 4%	49%	Partly Cloudy	SE 15 mph24 km/h
DayPartly cloudy and warm, with a high of 68°F20°C. Windy from the SE at 15 to 17 mph24 to 27 km/h. NightMostly cloudy, with a low around 67°F20°C. Windy from the SSE at 15 to 16 mph24 to 26 km/h.
	SaturdaySep 12	69°F20°C	68°F20°C	0.01 in0.3 mm· 2%	52%	Partly Cloudy	SSE 16 mph26 km/h
DayMostly cloudy and warm, with a high of 69°F20°C. Windy from the SSE at 16 to 18 mph26 to 28 km/h. NightPartly cloudy, with a low around 68°F20°C. Windy from the SSE at 16 to 17 mph25 to 27 km/h.
	SundaySep 13	68°F20°C	67°F19°C	0 in0.1 mm· —	61%	Partly Cloudy	SE 12 mph20 km/h
DayMostly cloudy and warm, with a high of 68°F20°C. Breezy from the SE at 13 to 15 mph20 to 24 km/h. NightMostly cloudy, with a low around 67°F20°C. Breezy from the SE at 12 to 15 mph19 to 24 km/h.
	MondaySep 14	68°F20°C	67°F20°C	0 in0 mm· —	73%	Partly Cloudy	ESE 11 mph17 km/h
DayMostly cloudy and warm, with a high of 68°F20°C. Breezy from the ESE at 11 to 12 mph18 to 19 km/h. NightMostly cloudy, with a low around 67°F20°C. Breezy from the SE at 10 to 11 mph16 to 18 km/h.
	TuesdaySep 15	68°F20°C	67°F19°C	0.01 in0.2 mm· 1%	85%	Cloudy	ESE 15 mph24 km/h
DayOvercast and mild, with a high of 68°F20°C. Breezy from the ESE at 15 to 16 mph24 to 25 km/h. NightOvercast, with a low around 67°F20°C. Windy from the ESE at 14 to 17 mph23 to 27 km/h.
	WednesdaySep 16	68°F20°C	67°F19°C	0.01 in0.3 mm· 1%	86%	Cloudy	ESE 19 mph30 km/h
DayOvercast and warm, with a high of 68°F20°C. Windy from the ESE at 19 to 20 mph31 to 32 km/h. NightOvercast, with a low around 67°F19°C. Windy from the ESE at 18 to 19 mph29 to 31 km/h.
	ThursdaySep 17	69°F20°C	67°F20°C	0.01 in0.3 mm· 1%	74%	Partly Cloudy	ESE 20 mph32 km/h
DayMostly cloudy and warm, with a high of 69°F20°C. Windy from the ESE at 20 to 21 mph33 to 34 km/h. NightMostly cloudy, with a low around 67°F20°C. Windy from the ESE at 19 to 20 mph31 to 32 km/h.
	FridaySep 18	68°F20°C	68°F20°C	0.02 in0.4 mm· 1%	74%	Partly Cloudy	ESE 19 mph30 km/h
DayMostly cloudy and warm, with a high of 68°F20°C. Windy from the ESE at 19 to 20 mph31 to 32 km/h. NightMostly cloudy, with a low around 68°F20°C. Windy from the ESE at 18 to 19 mph30 to 31 km/h.
	SaturdaySep 19	68°F20°C	67°F20°C	0.01 in0.3 mm· 1%	79%	Partly Cloudy	ESE 16 mph26 km/h
DayOvercast and warm, with a high of 68°F20°C. Windy from the ESE at 17 to 18 mph27 to 28 km/h. NightMostly cloudy, with a low around 67°F20°C. Windy from the ESE at 16 to 17 mph25 to 28 km/h.
	SundaySep 20	68°F20°C	67°F20°C	0.01 in0.3 mm· 1%	79%	Partly Cloudy	SE 15 mph24 km/h
DayOvercast and warm, with a high of 68°F20°C. Windy from the SE at 15 to 16 mph24 to 26 km/h. NightMostly cloudy, with a low around 67°F20°C. Breezy from the SE at 15 mph24 km/h.
	MondaySep 21	69°F20°C	68°F20°C	0.01 in0.3 mm· 1%	73%	Partly Cloudy	SE 15 mph24 km/h
DayMostly cloudy and warm, with a high of 69°F20°C. Windy from the SE at 15 to 16 mph25 to 26 km/h. NightMostly cloudy, with a low around 68°F20°C. Breezy from the SE at 15 to 16 mph24 to 25 km/h.
	TuesdaySep 22	69°F20°C	68°F20°C	0.01 in0.3 mm· 1%	70%	Partly Cloudy	ESE 15 mph24 km/h
DayMostly cloudy and warm, with a high of 69°F20°C. Breezy from the ESE at 15 to 16 mph24 to 25 km/h. NightMostly cloudy, with a low around 68°F20°C. Breezy from the SE at 15 mph24 km/h.
	WednesdaySep 23	69°F20°C	68°F20°C	0.01 in0.2 mm· 1%	69%	Partly Cloudy	ESE 15 mph24 km/h
DayMostly cloudy and warm, with a high of 69°F20°C. Windy from the ESE at 15 to 16 mph24 to 26 km/h. NightMostly cloudy, with a low around 68°F20°C. Breezy from the SE at 15 mph24 km/h.

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.

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Pattern	Example	Description
/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=11.5	Find nearest city by coordinates
/weather/{country}/	/weather/germany/	Country index — all cities by region

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