Home › Cities › Guernsey › Saint Pierre du Bois Parish
Saint Pierre du Bois Parish, Guernsey climate
Cfb Oceanic / temperate
Saint Pierre du Bois Parish has a mildly seasonal cool-temperate climate (Oceanic / temperate, Köppen Cfb). The hottest month is August with an average daily high near 20°C, while the coldest is February averaging around 5°C at night. Around 862 mm of precipitation falls each year, peaking in December (120 mm) and easing off in July (43 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Saint Pierre du Bois Parish climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 9 | 10 | 12 | 15 | 18 | 20 | 20 | 18 | 15 | 12 | 10 |
| Avg temp (°C) | 7 | 7 | 8 | 10 | 12 | 15 | 17 | 17 | 16 | 13 | 10 | 8 |
| Avg low (°C) | 5 | 5 | 6 | 7 | 9 | 12 | 14 | 14 | 13 | 11 | 8 | 6 |
| Precipitation (mm) | 92 | 76 | 63 | 54 | 49 | 48 | 43 | 56 | 55 | 98 | 107 | 120 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 9 | 10 | 12 | 15 | 18 |
| Avg temp (°C) | 7 | 7 | 8 | 10 | 12 | 15 |
| Avg low (°C) | 5 | 5 | 6 | 7 | 9 | 12 |
| Precipitation (mm) | 92 | 76 | 63 | 54 | 49 | 48 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 20 | 18 | 15 | 12 | 10 |
| Avg temp (°C) | 17 | 17 | 16 | 13 | 10 | 8 |
| Avg low (°C) | 14 | 14 | 13 | 11 | 8 | 6 |
| Precipitation (mm) | 43 | 56 | 55 | 98 | 107 | 120 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 19 | 16 | 15 | 13 | 11 | 11 | 11 | 12 | 12 | 18 | 20 | 19 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | — | 0.0 | 0.1 | — | — | — | — |
| Days with low ≤ 0°C (days) | 1 | 1 | 0.3 | 0.0 | — | — | — | 0.0 | — | — | 0.2 | 0.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 19 | 16 | 15 | 13 | 11 | 11 |
| Days with high ≥ 32°C (days) | — | — | — | — | — | — |
| Days with low ≤ 0°C (days) | 1 | 1 | 0.3 | 0.0 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 12 | 12 | 18 | 20 | 19 |
| Days with high ≥ 32°C (days) | 0.0 | 0.1 | — | — | — | — |
| Days with low ≤ 0°C (days) | — | 0.0 | — | — | 0.2 | 0.7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 83 | 81 | 77 | 69 | 68 | 66 | 64 | 67 | 67 | 77 | 82 | 83 |
| Relative humidity (%) | 83 | 83 | 85 | 85 | 87 | 89 | 89 | 87 | 83 | 82 | 82 | 82 |
| Wind speed (km/h) | 27.9 | 25.8 | 23.1 | 19.9 | 18.3 | 16.6 | 16.4 | 17.2 | 20.4 | 24.5 | 26.7 | 28.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 83 | 81 | 77 | 69 | 68 | 66 |
| Relative humidity (%) | 83 | 83 | 85 | 85 | 87 | 89 |
| Wind speed (km/h) | 27.9 | 25.8 | 23.1 | 19.9 | 18.3 | 16.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 67 | 67 | 77 | 82 | 83 |
| Relative humidity (%) | 89 | 87 | 83 | 82 | 82 | 82 |
| Wind speed (km/h) | 16.4 | 17.2 | 20.4 | 24.5 | 26.7 | 28.2 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Guernsey: Airport, a weather station, about 4 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.