Saint Peter Port weather by month & the best time to visit
🇬🇬 Guernsey · seaside town · oceanic / maritime climate
The best time to visit Saint Peter Port is September — its sunniest month (Sunshine Score 61/100), with August and July close behind. Saint Peter Port averages about 1,931 hours of sunshine a year. Daytime highs around 17°C / 63°F and roughly 47 mm of rain in September.
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- Sun hours / year
- 1,931
- Sunniest month
- September
- Peak score
- 61/100
- Rain / year
- 849 mm
- Midday UV at peak
- 6 (high)
- Sea at warmest
- 18°C / 64°F
- Population
- 16k
- Elevation
- 96 m
When is the best time to visit Saint Peter Port?
For sunshine, the best time to visit Saint Peter Port is September, then August and July. The dullest month is January (6/100, 96 mm of rain). The full month-by-month picture is in the table below.
How sunny is Saint Peter Port?
Saint Peter Port gets a moderate 1,931 hours of sunshine a year. 55 Sunshine Score points separate September (61) from January (6), so the month you pick matters. It is the less sunny of the two destinations tracked in Guernsey. The year's 849 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 6 | 9° / 48°F | 8° / 46°F | 96 mm | 0 | 11° / 52°F |
| February | 6 | 9° / 48°F | 7° / 45°F | 79 mm | 1 | 10° / 50°F |
| March | 6 | 9° / 48°F | 7° / 45°F | 69 mm | 2 | 10° / 50°F |
| April | 14 | 10° / 50°F | 9° / 48°F | 47 mm | 4 | 11° / 52°F |
| May | 27 | 12° / 54°F | 11° / 52°F | 51 mm | 5 | 13° / 55°F |
| June | 41 | 14° / 57°F | 13° / 55°F | 47 mm | 6 | 15° / 59°F |
| July | 54 | 16° / 61°F | 15° / 59°F | 47 mm | 6 | 17° / 63°F |
| August | 60 | 17° / 63°F | 16° / 61°F | 54 mm | 5 | 18° / 64°F |
| September | 61 | 17° / 63°F | 15° / 59°F | 47 mm | 4 | 17° / 63°F |
| October | 42 | 15° / 59°F | 13° / 55°F | 96 mm | 2 | 16° / 61°F |
| November | 29 | 13° / 55°F | 11° / 52°F | 110 mm | 1 | 15° / 59°F |
| December | 12 | 10° / 50°F | 9° / 48°F | 106 mm | 0 | 13° / 55°F |
Sea temperature in Saint Peter Port by month
The sea off Saint Peter Port is warmest in August at around 18°C / 64°F, and coolest in February at 10°C / 50°F. It never reaches comfortable swimming temperatures (21°C+). Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Saint Peter Port on the interactive sunshine globe →
Nearby places for sunshine
- Jersey Jersey · 39 km · best in Jul · 1,930 h sun/yr
- Exeter United Kingdom · 156 km · best in Jul · 1,796 h sun/yr
- Caen France · 158 km · best in Jun · 1,829 h sun/yr
- Bournemouth United Kingdom · 159 km · best in Sep · 1,899 h sun/yr
- Rennes France · 165 km · best in Sep · 1,848 h sun/yr
- Brest France · 172 km · best in Jul · 1,927 h sun/yr
Nearest destinations
- Saint Anne Guernsey · 41 km · 1,933 h sun/yr · best in Sep
- Dinard France · 102 km · 1,810 h sun/yr · best in Sep
Head-to-head
How Saint Peter Port compares month by month: Saint Peter Port vs Caen · Saint Peter Port vs Brest · Saint Peter Port vs Exeter · Saint Peter Port vs Jersey · all comparisons
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