Island in Bailiwick of Guernsey, Guernsey
Guernsey weather by month and the best time to visit
When to go to Guernsey
May–Sep is sunniest and warmest; Jul–Aug is busiest. Winters are mild, wet and windy, and some places close.
Guernsey weather by month
Average daily high, rainfall and conditions.
- Jan9°96 mm
- Feb9°79 mm
- Mar9°69 mm
- Apr10°47 mm
- May12°51 mm
- Jun14°46 mm
- Jul16°46 mm
- Aug17°54 mm
- Sep17°47 mm
- Oct15°96 mm
- Nov13°110 mm
- Dec10°106 mm
Monthly averages
| Month | High | Low | Rain | Humidity | Conditions |
|---|---|---|---|---|---|
| January | 9°C49°F | 8°C46°F | 96 mm | 83% | Cold |
| February | 9°C47°F | 7°C45°F | 79 mm | 83% | Cold |
| March | 9°C48°F | 7°C45°F | 69 mm | 84% | Cold |
| April | 10°C51°F | 9°C48°F | 47 mm | 85% | Cold |
| May | 12°C54°F | 11°C51°F | 51 mm | 87% | Cool |
| June | 14°C58°F | 13°C55°F | 46 mm | 88% | Cool |
| July | 16°C61°F | 15°C59°F | 46 mm | 88% | Cool |
| August | 17°C63°F | 16°C60°F | 54 mm | 86% | Cool |
| September | 17°C62°F | 15°C60°F | 47 mm | 83% | Cool |
| October | 15°C59°F | 14°C56°F | 96 mm | 82% | Cool |
| November | 13°C55°F | 11°C52°F | 110 mm | 82% | Cool |
| December | 10°C51°F | 9°C48°F | 106 mm | 82% | Cold |
Quick answers
What is the best month to visit Guernsey?
May–Sep. May–Sep is sunniest and warmest; Jul–Aug is busiest. Winters are mild, wet and windy, and some places close.
When is the rainy season in Guernsey?
Rain peaks in November with about 110 mm. No month averages 150 mm or more.
What is the hottest month in Guernsey?
August, with average highs of 17°C (63°F).
How cold does Guernsey get?
The coolest nights are in February, averaging 7°C (45°F).
More about Guernsey
Going to Guernsey solo?
SoloSquare is where travelers, nomads and locals in Guernsey meet up for small plans: coffee, dinners, walks and day trips. Join one, or start your own in a minute.
Sources
Climate averages are modelled from NASA POWER (MERRA-2) for 2001–2020 at about 50 km resolution, so coasts and valleys can differ a little. Temperatures are adjusted by 0.5°C for the city's elevation. Compiled and reviewed by SoloSquare. How we compile and score this. Spotted something out of date? Tell us.