Saint Helena, Ascension and Tristan da Cunha

Country · Africa

Population 5,633

Area 395 km²

Time zone Atlantic/St_Helena

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Michel Dancoisne-Martineau / CC0

Saint Helena, Ascension, and Tristan da Cunha Essentials

This collection spans the remote British Overseas Territories of Saint Helena, Ascension, and Tristan da Cunha. Highlights include Napoleon Bonaparte’s final residence at Longwood House, the 699-step Jacob’s Ladder in Jamestown, and Plantation House, home to the world’s oldest living land animal. Natural landmarks feature the man-made cloud forest of Green Mountain on Ascension Island and the volcanic pillar of Lot’s Wife. These sites represent centuries of maritime history, military fortifications, and unique biodiversity within the world’s most isolated inhabited archipelagos.

10 places

Saint Helena, Ascension and Tristan da Cunha — Map

Climate & when to visit

Select a month

Typical weather in January

Fair

7°–20° · varies by region
13° at night
0–15 rainy days · varies by region
15 sunny days
8 hours of sunshine per day
Dry air
Light breeze
20°C · cool for a dip
UV index 11 · extreme

Typical weather in February

Good

8°–21° · varies by region
14° at night
1–14 rainy days · varies by region
14 sunny days
8 hours of sunshine per day
Dry air
Light breeze
21°C · cool for a dip
UV index 10 · very high

Typical weather in March

Good

8°–22° · varies by region
14° at night
1–16 rainy days · varies by region
14 sunny days
7 hours of sunshine per day
Dry air
Light breeze
21°C · cool for a dip
UV index 9 · very high

Typical weather in April

Fair

7°–22° · varies by region
13° at night
1–18 rainy days · varies by region
12 sunny days
6 hours of sunshine per day
Dry air
Light breeze
21°C · cool for a dip
UV index 7 · high

Typical weather in May

Fair

5°–21° · varies by region
12° at night
1–20 rainy days · varies by region
11 sunny days
6 hours of sunshine per day
Dry air
Windy
20°C · cool for a dip
UV index 5 · moderate

Typical weather in June

Poor

4°–20° · varies by region
11° at night
1–20 rainy days · varies by region
8 sunny days
5 hours of sunshine per day
Dry air
Windy
18°C · cool for a dip
UV index 4 · moderate

Typical weather in July

Poor

3°–19° · varies by region
10° at night
1–19 rainy days · varies by region
8 sunny days
5 hours of sunshine per day
Dry air
Windy
18°C · too cold to swim
UV index 4 · moderate

Typical weather in August

Poor

3°–18° · varies by region
9° at night
0–18 rainy days · varies by region
6 sunny days
5 hours of sunshine per day
Dry air
Windy
17°C · too cold to swim
UV index 5 · moderate

Typical weather in September

Poor

3°–18° · varies by region
9° at night
0–17 rainy days · varies by region
6 sunny days
6 hours of sunshine per day
Dry air
Windy
17°C · too cold to swim
UV index 6 · high

Typical weather in October

Poor

3°–18° · varies by region
10° at night
0–16 rainy days · varies by region
7 sunny days
6 hours of sunshine per day
Dry air
Light breeze
17°C · too cold to swim
UV index 8 · very high

Typical weather in November

Poor

4°–18° · varies by region
11° at night
0–15 rainy days · varies by region
9 sunny days
7 hours of sunshine per day
Dry air
Light breeze
18°C · too cold to swim
UV index 9 · very high

Typical weather in December

Fair

6°–19° · varies by region
12° at night
0–16 rainy days · varies by region
11 sunny days
8 hours of sunshine per day
Dry air
Light breeze
19°C · cool for a dip
UV index 10 · very high

This destination spans several climate zones, so these figures are a range across the region rather than exact values. Climate data: NASA POWER + Copernicus ERA5 · 1996–2025