World → Saint Helena, Ascension and Tristan Da Cunha → Jamestown

Weather in Jamestown — today

Tomorrow Day after tomorrow 3 days Week 14 days Month forecast Weather archive

Now in Jamestown

☁️

+19°

Overcast

Feels like +18° · humidity 72%

Today 12.9: +23° / +18°

🕐 05:25

Wind

13 km/h

UV index

Air (AQI)

24 · Good

Precipitation

Humidity

72%

Pressure

1016 hPa

Sunrise / sunset

06:20 / 18:17

Sea temperature

🌊 +21°

👕 What to wear today

Comfortable — a T-shirt, a light sweater for the evening.

Weather for an activity:

🎣 fishing 🏖️ the beach 🏃 a run 📸 a photo shoot 🚶 a walk

Detailed weather information for Jamestown

Today, 12 September, Saturday, in Jamestown (Saint Helena, Ascension and Tristan Da Cunha): cloudy, light rain in places, moderately warm. During the day the air will warm up to +23°, at night around +18°. Due to the wind it feels like +18°. Wind up to 16 km/h. No precipitation expected, you won't need an umbrella. A T-shirt is comfortable during the day, but take a light sweater or windbreaker for the evening. Water temperature is +21° — you can swim. The sun will rise at 06:20 and set at 18:17 — daylight lasts 12 hours.

Hourly weather in Jamestown

💧 The bars at the bottom show the hourly precipitation probability. Shaded areas of the chart are the dark hours (before sunrise 🌅 and after sunset 🌇).

Weather in Jamestown for 14 days

Tap a day to expand it by time of day and open the full forecast. The bar shows the range from the night low (left) to the day high (right).

▶

Today 12.9

🌦️

💧 4%

+18° +23°

Morning

⛅

+20°

Day

🌦️

+23°

Evening

🌇

+19°

Night

🌙

+18°

Drizzle · precipitation 4% · wind up to 16 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Tomorrow 13.9

🌦️

💧 4%

+17° +23°

Morning

⛅

+20°

Day

🌦️

+23°

Evening

🌇

+19°

Night

🌙

+17°

Drizzle · precipitation 4% · wind up to 14 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Mon 14.9

🌦️

💧 12%

+16° +22°

Morning

🌦️

+18°

Day

🌦️

+22°

Evening

🌇

+21°

Night

🌙

+16°

Drizzle · precipitation 12% · wind up to 15 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Tue 15.9

🌦️

💧 53%

+18° +21°

Morning

🌦️

+19°

Day

🌦️

+21°

Evening

🌇

+20°

Night

🌙

+18°

Drizzle · precipitation 53% · wind up to 21 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Wed 16.9

🌦️

💧 52%

+18° +20°

Morning

🌦️

+19°

Day

🌦️

+20°

Evening

🌇

+20°

Night

🌙

+18°

Drizzle · precipitation 52% · wind up to 27 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Thu 17.9

🌦️

💧 43%

+18° +22°

Morning

🌦️

+19°

Day

🌦️

+22°

Evening

🌇

+21°

Night

🌙

+18°

Drizzle · precipitation 43% · wind up to 34 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Fri 18.9

🌦️

💧 65%

+18° +21°

Morning

🌦️

+19°

Day

🌦️

+21°

Evening

🌇

+20°

Night

🌙

+18°

Drizzle · precipitation 65% · wind up to 25 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Sat 19.9

🌦️

💧 17%

+18° +20°

Morning

🌦️

+19°

Day

🌦️

+20°

Evening

🌇

+20°

Night

🌙

+18°

Drizzle · precipitation 17% · wind up to 19 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Sun 20.9

🌦️

💧 17%

+18° +21°

Morning

🌦️

+19°

Day

🌦️

+21°

Evening

🌇

+20°

Night

🌙

+18°

Drizzle · precipitation 17% · wind up to 16 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Mon 21.9

☁️

💧 14%

+18° +22°

Morning

☁️

+19°

Day

☁️

+22°

Evening

🌇

+21°

Night

🌙

+18°

Overcast · precipitation 14% · wind up to 17 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Tue 22.9

🌦️

💧 14%

+18° +21°

Morning

🌦️

+19°

Day

🌦️

+21°

Evening

🌇

+20°

Night

🌙

+18°

Drizzle · precipitation 14% · wind up to 20 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Wed 23.9

🌦️

💧 25%

+18° +21°

Morning

🌦️

+19°

Day

🌦️

+21°

Evening

🌇

+20°

Night

🌙

+18°

Drizzle · precipitation 25% · wind up to 27 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Thu 24.9

🌦️

💧 15%

+19° +20°

Morning

🌦️

+19°

Day

🌦️

+20°

Evening

🌇

+20°

Night

🌙

+19°

Drizzle · precipitation 15% · wind up to 31 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

▶

Fri 25.9

🌦️

💧 25%

+18° +20°

Morning

🌦️

+19°

Day

🌦️

+20°

Evening

🌇

+20°

Night

🌙

+18°

Drizzle · precipitation 25% · wind up to 30 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.

🗺️ Precipitation radar

Precipitation radar (RainViewer) over a clean base map — updates every 5–10 minutes. Colours show nearby precipitation; if there is none, the map is simply clear — that is normal. Zoom with + / −.

Rain intensity:lightmoderateheavy

🎯 What to do in this weather — indices of the day

Comfort score from 0 (bad) to 100 (excellent), calculated from the day's weather. For “rain” and “UV” a percentage/risk level is shown.

🏖️ Beach

67 / 100

for sea and sun · Good

🏊 Swimming

66 / 100

water 21° · Good

🏃 Running

74 / 100

comfort for running · Good

🧴 UV

moderate · low

☂️ Rain

unlikely · low

✨ Stars

85 / 100

evening visibility · Excellent

🧺 Laundry drying

63 / 100

will dry outside · Average

🚗 Car wash

90 / 100

no rain expected · Excellent

🌫️ Air quality

Good air

European AQI

PM2.5: 7PM10: 12O₃: 65NO₂: 0

The air is clean — you can walk and exercise outside.

🌅 Sun, moon and sea

Sunrise

06:20

Sunset

18:17

Golden hour

17:48

Daylight

12 h (+1 min vs yesterday)

Sea temperature

+21°

🌊 moderate, waves 1.7 m.

Jamestown climate by month

Long-term averages. Hover over a bar for details. The forecast for a specific month is a combination of the climate normal and the model forecast for the coming weeks.

+23°

+22°

Jan

+24°

+23°

Feb

+24°

+23°

Mar

+24°

+23°

Apr

+23°

+22°

May

+21°

Jun

+20°

Jul

+20°

+19°

Aug

+19°

Sep

+20°

+19°

Oct

+20°

+19°

Nov

+21°

+20°

Dec

swipe sideways →

Bar color shows temperature:frostcoolcomfortablewarmhot— best months to visit

Month	Day	Night	Sea	Precipitation	What to pack and what makes the month notable (events, nuances)
January	+23°	+22°	+24°	5 mm	One of the best times to visit: +23° by day, fresh nights. 🙂 a sweater for the evening. Water at +24° — great for swimming.
February	+24°	+23°	+25°	5 mm	Ideal weather: +24° daytime — neither hot nor cold. 🙂 a sweater for the evening. Water at +25° — great for swimming. Weather-wise, one of the three best months to visit.
March	+24°	+23°	+26°	8 mm	The most pleasant season: +24° by day, comfortable all day long. 😊 light summer clothing. Water at +26° — great for swimming. This is the hottest month of the year in Jamestown.
April	+24°	+23°	+25°	6 mm	One of the best times to visit: +24° by day, fresh nights. 🙂 a sweater for the evening. Water at +25° — great for swimming. Weather-wise, one of the three best months to visit.
May	+23°	+22°	+24°	6 mm	Ideal weather: +23° daytime — neither hot nor cold. 🙂 a sweater for the evening. Water at +24° — great for swimming.
June	+21°	+21°	+23°	8 mm	The most pleasant season: +21° by day, comfortable all day long. 🙂 a sweater for the evening. Water at +23° — great for swimming. The shortest daylight of the year — it gets dark early.
July	+20°	+20°	+22°	5 mm	One of the best times to visit: +20° by day, fresh nights. 🙂 a sweater for the evening. Water at +22° — great for swimming.
August	+20°	+19°	+21°	5 mm	Ideal weather: +20° daytime — neither hot nor cold. 🙂 a sweater for the evening. Sea at +21° — swimmable, refreshing.
September	+19°	+19°	+20°	4 mm	The most pleasant season: +19° by day, comfortable all day long. 🙂 a sweater for the evening. Sea at +20° — swimmable, refreshing. This is the coldest month of the year.
October	+20°	+19°	+20°	3 mm	One of the best times to visit: +20° by day, fresh nights. 🙂 a sweater for the evening. Sea at +20° — swimmable, refreshing.
November	+20°	+19°	+21°	3 mm	Ideal weather: +20° daytime — neither hot nor cold. 🙂 a sweater for the evening. Sea at +21° — swimmable, refreshing.
December	+21°	+20°	+22°	3 mm	The most pleasant season: +21° by day, comfortable all day long. 🙂 a sweater for the evening. Water at +22° — great for swimming. The longest daylight hours of the year — more time for everything.

When to visit Jamestown

✅ Recommended time to visit

🌟 Best time: February, March, April

Daytime air+24…+24°

Sea temperature+25…+26°

Precipitationalmost none

Why: comfortable +24…+24° by day, little rain, warm sea (+25…26°).

⚠️ Doable, with caveats

🌤️ Shoulder season: January, May, June, July, November, December

Daytime air+20…+23°

Sea temperature+21…+24°

Precipitationalmost none

Why: cool (+20…+23°) — not beach season, but great for city sights and museums.

🔴 Not the best time

🌤️ Shoulder season: August, September, October

Daytime air+19…+20°

Sea temperature+20…+21°

Precipitationalmost none

Bottom line: the best time to visit Jamestown is February – April, and the most comfortable months are February, March, April. The toughest months to visit are August, September, October: cool and damp.