Jersey
Jersey in August
Where it is warm, dry and good for swimming in Jersey in August — compared across the country’s main destinations.
Quick answers
- Where is it warmest in Jersey in August?
- St Martin is the warmest of the 6 destinations compared, with highs of 21°C (70°F) in August; Saint Helier is the coolest at 20°C (69°F).
- Can you swim in the sea in Jersey in August?
- Hardly: even the warmest water, at St Martin (18°C (64°F)), stays below 21 °C.
Warmest
21°
St Martin
Coolest
20°
Saint Helier
Driest
45 mm
St Martin
Warmest sea
18°
St Martin
St Martin is the warm end of Jersey in August (21°C (70°F)); Saint Helier the cool end (20°C (69°F)). On average it is about as warm as July. Most destinations stay largely dry. Best bets this month: Saint Helier.
Best places in Jersey in August
Weather in August by city
| Place | Day | Night | Rain | Sea | Score |
|---|---|---|---|---|---|
| St Martin | 21° | 14° | 45 mm | 18° | 77 |
| Le Hocq | 21° | 14° | 45 mm | 18° | 77 |
| Saint Helier | 20° | 14° | 46 mm | 18° | 74 |
| Saint John | 20° | 14° | 46 mm | 18° | 74 |
| St Lawrence | 20° | 14° | 46 mm | 18° | 74 |
| Trinity | 20° | 14° | 46 mm | 18° | 74 |
Festivals in Jersey in August
- Jersey Battle of Flowers Carnival in the Channel Islands
Frequently asked questions
What is the weather like in Jersey in August?
Average daytime highs range from 20° in Saint Helier to 21° in St Martin.
Can you swim in Jersey in August?
The sea is cool: the warmest water is around St Martin at about 18°.