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WorldSaint 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
🌙
+18°
Clear
Feels like +18° · humidity 73%
Today 14.8: +21° / +17°
🕐 20:25
Wind
7 km/h
UV index
0
Air (AQI)
28 · Good
Precipitation
6%
Humidity
73%
Pressure
1021 hPa
Sunrise / sunset
06:40 / 18:14
Sea temperature
🌊 +21°

👕 What to wear today

Comfortable — a T-shirt, a light sweater for the evening.
Weather for an activity:

Detailed weather information for Jamestown

Today, 14 August, Friday, 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 +21°, at night around +17°. Due to the wind it feels like +18°. Wind up to 17 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 06:40 and set at 18:14 — daylight lasts 12 hours.

Hourly weather in Jamestown

🌅 sunrise 06:40 🌇 sunset 18:14🌙🌙🌙🌙🌤️☁️☁️☁️+18°+17°+16°+16°+19°+21°+22°+21°20:0023:0002:0005:0008:0011:0014:0017:00
💧 No precipitation expected on this day. 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 14.8
🌦️
💧 6%
+17° +21°
Morning
🌦️
+18°
Day
🌦️
+21°
Evening
🌇
+20°
Night
🌙
+17°
Drizzle · precipitation 6% · wind up to 17 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Tomorrow 15.8
☁️
+16° +22°
Morning
🌤️
+19°
Day
☁️
+22°
Evening
🌇
+19°
Night
🌙
+16°
Overcast · precipitation 0% · wind up to 9 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Sun 16.8
☁️
+16° +23°
Morning
🌤️
+19°
Day
☁️
+23°
Evening
🌇
+18°
Night
🌙
+16°
Overcast · precipitation 0% · wind up to 13 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Mon 17.8
☁️
+16° +22°
Morning
☁️
+18°
Day
☁️
+22°
Evening
🌇
+21°
Night
🌙
+16°
Overcast · precipitation 0% · wind up to 13 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Tue 18.8
+17° +23°
Morning
+19°
Day
+23°
Evening
🌇
+22°
Night
🌙
+17°
Partly cloudy · precipitation 0% · wind up to 17 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Wed 19.8
+18° +23°
Morning
+20°
Day
+23°
Evening
🌇
+22°
Night
🌙
+18°
Partly cloudy · precipitation 0% · wind up to 21 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Thu 20.8
☁️
+18° +23°
Morning
☁️
+20°
Day
☁️
+23°
Evening
🌇
+22°
Night
🌙
+18°
Overcast · precipitation 0% · wind up to 22 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Fri 21.8
☁️
💧 6%
+18° +22°
Morning
☁️
+19°
Day
☁️
+22°
Evening
🌇
+21°
Night
🌙
+18°
Overcast · precipitation 6% · wind up to 23 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Sat 22.8
💧 14%
+18° +22°
Morning
+19°
Day
+22°
Evening
🌇
+21°
Night
🌙
+18°
Partly cloudy · precipitation 14% · wind up to 25 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Sun 23.8
☁️
💧 9%
+18° +22°
Morning
☁️
+19°
Day
☁️
+22°
Evening
🌇
+21°
Night
🌙
+18°
Overcast · precipitation 9% · wind up to 24 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Mon 24.8
☁️
💧 6%
+18° +23°
Morning
☁️
+20°
Day
☁️
+23°
Evening
🌇
+22°
Night
🌙
+18°
Overcast · precipitation 6% · wind up to 23 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Tue 25.8
💧 2%
+18° +23°
Morning
+20°
Day
+23°
Evening
🌇
+22°
Night
🌙
+18°
Partly cloudy · precipitation 2% · wind up to 18 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Wed 26.8
☁️
💧 4%
+18° +23°
Morning
☁️
+20°
Day
☁️
+23°
Evening
🌇
+22°
Night
🌙
+18°
Overcast · precipitation 4% · wind up to 17 km/h.
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.
Thu 27.8
💧 10%
+18° +22°
Morning
+19°
Day
+22°
Evening
🌇
+21°
Night
🌙
+18°
Partly cloudy · precipitation 10% · wind up to 24 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
15 / 100
for sea and sun · Bad
🏊 Swimming
64 / 100
water 21° · Average
🏃 Running
78 / 100
comfort for running · Good
🧴 UV
0%
moderate · low
☂️ Rain
6%
unlikely · low
✨ Stars
84 / 100
evening visibility · Excellent
🧺 Laundry drying
60 / 100
will dry outside · Average
🚗 Car wash
88 / 100
no rain expected · Excellent

🌫️ Air quality

28
Good air
European AQI
PM2.5: 8PM10: 14O₃: 70NO₂: 0
The air is clean — you can walk and exercise outside.

🌅 Sun, moon and sea

Sunrise
06:40
Sunset
18:14
Golden hour
17:45
Daylight
12 h (+1 min vs yesterday)
Sea temperature
+21°
🌊 rough, waves 2.8 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°
+21°
Jun
+20°
+20°
Jul
+20°
+19°
Aug
+19°
+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.

🌡️ Today vs the climate normal

Today's high
+21°
Normal for August
+20°
Deviation
1° warmer than normal
A year ago on this day
+21°
Record for this date
+22° (2023)
The normal, “a year ago” and the record come from the weather archive since 1940 (Open-Meteo / ERA5).

Weather archive for Jamestown

📅 See what the weather was like on any day since 1940. For example: “what was the weather on March 2, 2021”.

Show the archive for the selected day →

Weather in cities near Jamestown

Frequently asked questions about the weather in Jamestown

What is the weather in Jamestown right now?
Clear, +18°, feels like +18°.
Will it rain in Jamestown today?
No: 6% chance, 0 mm.
When is the best time to visit Jamestown?
Best time to visit — February – April.
Can you swim in Jamestown in summer?
In winter the water is around +22° — great for swimming. In summer the sea warms up to +24°.
What time are sunrise and sunset in Jamestown?
Sunrise 06:40, sunset 18:14.
Does it snow in Jamestown in winter?
No, it practically never snows.
What is the climate in Jamestown by month?
Summers up to +24° in March, winters around +19° in September; the wettest month is March.
Is it cold in Jamestown in winter?
🙂 Mild, pleasant weather. A light sweater will come in handy in the evening.