Climate almanac
Saint Peter Port
St Peter Port, Guernsey · 49.46°, -2.54°
What is the climate like in Saint Peter Port?
The best time to visit Saint Peter Port is typically June – September, with trip comfort peaking in July (7.3/10). Saint Peter Port is warmest in August, when daily highs average 64°F (18°C), and coolest in January, when lows fall to about 46°F (8°C). The wettest month is typically November and the driest is July; the year sees roughly 39 in (985 mm) of precipitation.
- Best time to visitJune – September — comfort peaks in July (7.3/10)
- Warmest monthAugust — average high 64°F (18°C)
- Coolest monthJanuary — average low 46°F (8°C)
- Wettest monthNovember (5.6 in (143 mm))
- Driest monthJuly (1.4 in (35 mm))
- Annual precipitation39 in (985 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)
- Records fromGuernsey: Airport, 6 km away (1959-2026)