Saint Peter Port weather in December
In December, Saint Peter Port sees average daytime highs of 11°C and overnight lows near 9°C, with 121 mm of precipitation across 17 wet days and about 8 hours of daylight. It is the 8th-warmest and 2nd-wettest month of the year here.
Day-to-day highs hold fairly steady near 11°C through the month. The sky is clear or mostly clear about 10% of the time in December, and the air most often feels dry.
Daylight stretches from about 8 h 18 min at the start of December to 8 hours by month's end. Set against the rest of the year, December is Saint Peter Port's 11th-clearest and 1st-windiest month. For the whole year in context, see Saint Peter Port's year-round climate.
- Daytime high
- 11°
- 8th warmest
- Overnight low
- 9°
- 4th coldest
- Precipitation
- 121 mm
- 17 wet days
- Daylight
- 8 hours
- 8:07 AM – 4:05 PM
- Cloud cover
- 75%
- 11th clearest
- Wind
- 35 km/h
- 1st windiest
- Solar energy
- 0.8 kWh/m²
- Travel score
- 2.2
- out of 10
Saint Peter Port is parish, port, and capital of Guernsey in the Channel Islands.
- Density
- 2,537/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in December
Day-to-day highs hold fairly steady near 11°C through the month.
A typical December day in Saint Peter Port reaches about 11°C in the afternoon and slips back to 9°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 8°C and 13°C. Set against its neighbours, December runs about 2°C cooler than November and about 1°C warmer than January.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 |
| Avg low (°C) | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 8 | 8 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 12 | 10 |
| 2 | 12 | 10 |
| 3 | 12 | 10 |
| 4 | 11 | 10 |
| 5 | 11 | 9 |
| 6 | 11 | 9 |
| 7 | 11 | 9 |
| 8 | 11 | 9 |
| 9 | 11 | 9 |
| 10 | 11 | 9 |
| 11 | 11 | 9 |
| 12 | 11 | 9 |
| 13 | 11 | 9 |
| 14 | 11 | 9 |
| 15 | 11 | 9 |
| 16 | 11 | 9 |
| 17 | 11 | 9 |
| 18 | 11 | 9 |
| 19 | 11 | 9 |
| 20 | 11 | 9 |
| 21 | 11 | 9 |
| 22 | 11 | 9 |
| 23 | 11 | 9 |
| 24 | 11 | 9 |
| 25 | 11 | 8 |
| 26 | 11 | 8 |
| 27 | 10 | 8 |
| 28 | 10 | 8 |
| 29 | 10 | 8 |
| 30 | 10 | 8 |
| 31 | 10 | 8 |
Saint Peter Port weather by month
How December compares with the rest of the year at a glance. December is the 8th-warmest and 2nd-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 10° / 8° | 98 | 15.7 | 8.4 | 1.8 |
| Feb | 9° / 7° | 74 | 13.3 | 9.8 | 1.7 |
| Mar | 10° / 8° | 58 | 11.5 | 11.5 | 2.0 |
| Apr | 11° / 9° | 50 | 9.7 | 13.4 | 2.6 |
| May | 13° / 11° | 45 | 7.9 | 15.1 | 3.6 |
| Jun | 15° / 13° | 42 | 7.5 | 16 | 4.7 |
| Jul | 17° / 15° | 36 | 6.9 | 15.6 | 5.7 |
| Aug | 17° / 16° | 50 | 8.6 | 14.2 | 5.9 |
| Sep | 17° / 15° | 57 | 9.4 | 12.4 | 5.5 |
| Oct | 15° / 14° | 107 | 15 | 10.5 | 4.1 |
| Nov | 13° / 11° | 121 | 17.7 | 8.9 | 2.8 |
| Dec | 11° / 9° | 121 | 17 | 8 | 2.2 |
Cloud cover in December
The sky is clear or mostly clear about 10% of the time in December.
Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 74%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 26 | 26 | 25 | 25 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 25 |
| Cloudier (%) | 71 | 71 | 71 | 71 | 71 | 72 | 72 | 72 | 73 | 73 | 74 | 74 | 75 | 75 | 77 | 77 | 77 | 77 | 77 | 77 | 77 | 76 | 76 | 76 | 76 | 76 | 76 | 76 | 75 | 75 | 75 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 29 | 71 |
| 2 | 29 | 71 |
| 3 | 29 | 71 |
| 4 | 29 | 71 |
| 5 | 29 | 71 |
| 6 | 28 | 72 |
| 7 | 28 | 72 |
| 8 | 28 | 72 |
| 9 | 27 | 73 |
| 10 | 27 | 73 |
| 11 | 26 | 74 |
| 12 | 26 | 74 |
| 13 | 25 | 75 |
| 14 | 25 | 75 |
| 15 | 23 | 77 |
| 16 | 23 | 77 |
| 17 | 23 | 77 |
| 18 | 23 | 77 |
| 19 | 23 | 77 |
| 20 | 23 | 77 |
| 21 | 23 | 77 |
| 22 | 24 | 76 |
| 23 | 24 | 76 |
| 24 | 24 | 76 |
| 25 | 24 | 76 |
| 26 | 24 | 76 |
| 27 | 24 | 76 |
| 28 | 24 | 76 |
| 29 | 25 | 75 |
| 30 | 25 | 75 |
| 31 | 25 | 75 |
Chance of precipitation in December
Saint Peter Port gets around 121 mm of rain and snow over 17 wet days in December. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 55% and peaks near 59% on the wettest days, and about 0 day brings snow.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 59 | 58 | 57 | 57 | 56 | 55 | 54 | 54 | 53 | 53 | 53 | 53 | 53 | 53 | 54 | 54 | 54 | 55 | 55 | 55 | 55 | 56 | 56 | 56 | 55 | 55 | 55 | 54 | 54 | 54 | 54 |
| Rain chance (%) | |
|---|---|
| 1 | 59 |
| 2 | 58 |
| 3 | 57 |
| 4 | 57 |
| 5 | 56 |
| 6 | 55 |
| 7 | 54 |
| 8 | 54 |
| 9 | 53 |
| 10 | 53 |
| 11 | 53 |
| 12 | 53 |
| 13 | 53 |
| 14 | 53 |
| 15 | 54 |
| 16 | 54 |
| 17 | 54 |
| 18 | 55 |
| 19 | 55 |
| 20 | 55 |
| 21 | 55 |
| 22 | 56 |
| 23 | 56 |
| 24 | 56 |
| 25 | 55 |
| 26 | 55 |
| 27 | 55 |
| 28 | 54 |
| 29 | 54 |
| 30 | 54 |
| 31 | 54 |
Humidity in December
Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in December
Winds average 35 km/h in December, the windiest month of the year.
Across December, daily wind ranges from about 34 km/h on the calmest days to 35 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 34 | 34 | 34 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 | 35 |
| Feels | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy | windy |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 34 | windy |
| 2 | 34 | windy |
| 3 | 34 | windy |
| 4 | 35 | windy |
| 5 | 35 | windy |
| 6 | 35 | windy |
| 7 | 35 | windy |
| 8 | 35 | windy |
| 9 | 35 | windy |
| 10 | 35 | windy |
| 11 | 35 | windy |
| 12 | 35 | windy |
| 13 | 35 | windy |
| 14 | 35 | windy |
| 15 | 35 | windy |
| 16 | 35 | windy |
| 17 | 35 | windy |
| 18 | 35 | windy |
| 19 | 35 | windy |
| 20 | 35 | windy |
| 21 | 35 | windy |
| 22 | 35 | windy |
| 23 | 35 | windy |
| 24 | 35 | windy |
| 25 | 35 | windy |
| 26 | 35 | windy |
| 27 | 35 | windy |
| 28 | 35 | windy |
| 29 | 35 | windy |
| 30 | 35 | windy |
| 31 | 35 | windy |
Sunrise & sunset in December
Daylight runs from about 8 h 18 min at the start of December to 8 hours by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 18 minutes over December. Sunrise moves from 7:52 AM to 8:13 AM, and sunset from 4:08 PM to 4:13 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 8.3 | 8.2 | 8.2 | 8.2 | 8.1 | 8.1 | 8.1 | 8.1 | 8.1 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 7.9 | 7.9 | 7.9 | 7.9 | 7.9 | 7.9 | 7.9 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 | 8.0 |
| Sunrise (AM) | 7:52 | 7:53 | 7:55 | 7:56 | 7:57 | 7:58 | 7:59 | 8:00 | 8:01 | 8:02 | 8:03 | 8:04 | 8:05 | 8:06 | 8:07 | 8:07 | 8:08 | 8:09 | 8:09 | 8:10 | 8:10 | 8:11 | 8:11 | 8:12 | 8:12 | 8:12 | 8:13 | 8:13 | 8:13 | 8:13 | 8:13 |
| Sunset (PM) | 4:08 | 4:07 | 4:07 | 4:06 | 4:06 | 4:06 | 4:05 | 4:05 | 4:05 | 4:05 | 4:05 | 4:05 | 4:05 | 4:05 | 4:05 | 4:05 | 4:05 | 4:06 | 4:06 | 4:06 | 4:07 | 4:07 | 4:08 | 4:08 | 4:09 | 4:10 | 4:10 | 4:11 | 4:12 | 4:12 | 4:13 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 8.3 | 7:52 | 4:08 |
| 2 | 8.2 | 7:53 | 4:07 |
| 3 | 8.2 | 7:55 | 4:07 |
| 4 | 8.2 | 7:56 | 4:06 |
| 5 | 8.1 | 7:57 | 4:06 |
| 6 | 8.1 | 7:58 | 4:06 |
| 7 | 8.1 | 7:59 | 4:05 |
| 8 | 8.1 | 8:00 | 4:05 |
| 9 | 8.1 | 8:01 | 4:05 |
| 10 | 8.0 | 8:02 | 4:05 |
| 11 | 8.0 | 8:03 | 4:05 |
| 12 | 8.0 | 8:04 | 4:05 |
| 13 | 8.0 | 8:05 | 4:05 |
| 14 | 8.0 | 8:06 | 4:05 |
| 15 | 8.0 | 8:07 | 4:05 |
| 16 | 8.0 | 8:07 | 4:05 |
| 17 | 8.0 | 8:08 | 4:05 |
| 18 | 8.0 | 8:09 | 4:06 |
| 19 | 7.9 | 8:09 | 4:06 |
| 20 | 7.9 | 8:10 | 4:06 |
| 21 | 7.9 | 8:10 | 4:07 |
| 22 | 7.9 | 8:11 | 4:07 |
| 23 | 7.9 | 8:11 | 4:08 |
| 24 | 7.9 | 8:12 | 4:08 |
| 25 | 7.9 | 8:12 | 4:09 |
| 26 | 8.0 | 8:12 | 4:10 |
| 27 | 8.0 | 8:13 | 4:10 |
| 28 | 8.0 | 8:13 | 4:11 |
| 29 | 8.0 | 8:13 | 4:12 |
| 30 | 8.0 | 8:13 | 4:12 |
| 31 | 8.0 | 8:13 | 4:13 |
Solar energy in December
Average shortwave solar energy reaching the ground each day in December, about 0.8 kWh/m² — the year's lowest.
For context, solar energy here swings from a low near 0.8 kWh/m² to a high of 6.39 kWh/m² in June across the year — December's 0.8 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.9 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.8 |
| Level | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 0.9 | Dim |
| 2 | 0.9 | Dim |
| 3 | 0.9 | Dim |
| 4 | 0.9 | Dim |
| 5 | 0.9 | Dim |
| 6 | 0.9 | Dim |
| 7 | 0.8 | Dim |
| 8 | 0.8 | Dim |
| 9 | 0.8 | Dim |
| 10 | 0.8 | Dim |
| 11 | 0.8 | Dim |
| 12 | 0.8 | Dim |
| 13 | 0.8 | Dim |
| 14 | 0.8 | Dim |
| 15 | 0.8 | Dim |
| 16 | 0.8 | Dim |
| 17 | 0.8 | Dim |
| 18 | 0.8 | Dim |
| 19 | 0.8 | Dim |
| 20 | 0.8 | Dim |
| 21 | 0.8 | Dim |
| 22 | 0.8 | Dim |
| 23 | 0.8 | Dim |
| 24 | 0.8 | Dim |
| 25 | 0.8 | Dim |
| 26 | 0.8 | Dim |
| 27 | 0.8 | Dim |
| 28 | 0.8 | Dim |
| 29 | 0.8 | Dim |
| 30 | 0.8 | Dim |
| 31 | 0.8 | Dim |
Hazard calendar for Saint Peter Port
In December, Saint Peter Port sits inside its rainy season season. The full year is below, with each hazard's peak months called out.
Saint Peter Port's rainy season runs September–March, when most of the year's rain falls.
Is December a good time to visit Saint Peter Port?
Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
December is a weaker month for outdoor sightseeing in Saint Peter Port.
What to pack for Saint Peter Port in December
From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In December, Saint Peter Port sees daytime highs around 11°C and nights near 9°C. Pack a warm layer, rain gear and a windbreaker. About 17 days see rain.
Sea temperature near Saint Peter Port in December
The nearest coast averages about 12°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in September at about 17°C and coldest in March near 9°C.
The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 10 | 10 | 9 | 10 | 12 | 14 | 16 | 17 | 17 | 16 | 14 | 12 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Bracing | Bracing | Cool | Cool | Cool | Cool | Bracing | Bracing |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 10 | Bracing |
| Feb | 10 | Bracing |
| Mar | 9 | Bracing |
| Apr | 10 | Bracing |
| May | 12 | Bracing |
| Jun | 14 | Bracing |
| Jul | 16 | Cool |
| Aug | 17 | Cool |
| Sep | 17 | Cool |
| Oct | 16 | Cool |
| Nov | 14 | Bracing |
| Dec | 12 | Bracing |
UV index in Saint Peter Port in December
Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Saint Peter Port peaks around August 12 at about 6 (high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 6 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 1 | 3 | 5 | 6 | 6 | 6 | 7 | 5 | 3 | 1 | 1 |
| Level | Low | Low | Moderate | Moderate | High | High | High | High | Moderate | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 1 | Low |
| Mar | 3 | Moderate |
| Apr | 5 | Moderate |
| May | 6 | High |
| Jun | 6 | High |
| Jul | 6 | High |
| Aug | 7 | High |
| Sep | 5 | Moderate |
| Oct | 3 | Moderate |
| Nov | 1 | Low |
| Dec | 1 | Low |
Where is Saint Peter Port?
Saint Peter Port sits at 49.5°N, 2.5°W, 10 m above sea level, in Guernsey. The nearest listed city is Saint Helier, 43 km away.
Topography around Saint Peter Port
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Saint Peter Port.
Within 3 km, the terrain around Saint Peter Port has only modest variations in elevation — a maximum elevation change of 105 m around an average of 24 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 108 m; within 80 km, only modest variations in elevation — a maximum elevation change of 191 m.
The land around Saint Peter Port is covered by water (41%) and trees (25%) within 3 km, water (91%) within 16 km, and water (88%) within 80 km.
Guernsey travel facts
- Power plugs
- Type G
- 230 V · 50 Hz
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Saint Peter Port (49.4598°, -2.5353°, elevation 10 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).