Saint Peter Port weather in January

In January, Saint Peter Port sees average daytime highs of 10°C and overnight lows near 8°C, with 98 mm of precipitation across 15.7 wet days and about 8.4 hours of daylight. It is the 10th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 10°C through the month. The sky is clear or mostly clear about 11% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 hours at the start of January to 9 hours by month's end. Set against the rest of the year, January is Saint Peter Port's 12th-clearest and 2nd-windiest month. For the whole year in context, see Saint Peter Port's year-round climate.

Daytime high
10°
10th warmest
Overnight low
2nd coldest
Precipitation
98 mm
15.7 wet days
Daylight
8 h 24 min
8:08 AM – 4:31 PM
Cloud cover
75%
12th clearest
Wind
35 km/h
2nd windiest
Solar energy
0.98 kWh/m²
Travel score
1.8
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 January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 10°C through the month.

A typical January day in Saint Peter Port reaches about 10°C in the afternoon and slips back to 8°C overnight — a 2°C spread between the day's warmth and the night's chill. On most days the high lands between 7°C and 12°C. Set against its neighbours, January runs about 1°C cooler than December and on par with February.

10°15°151015202531
Avg high (°C)Avg low (°C)
1108
2108
3108
4108
5108
6108
7108
8108
9108
10108
11108
12108
13108
14108
15108
16108
17108
18108
19108
20108
21108
22108
23108
24108
2598
2697
2797
2897
2997
3097
3197

Saint Peter Port weather by month

How January compares with the rest of the year at a glance. January is the 10th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan10° / 9815.78.41.8
Feb / 7413.39.81.7
Mar10° / 5811.511.52.0
Apr11° / 509.713.42.6
May13° / 11°457.915.13.6
Jun15° / 13°427.5164.7
Jul17° / 15°366.915.65.7
Aug17° / 16°508.614.25.9
Sep17° / 15°579.412.45.5
Oct15° / 14°1071510.54.1
Nov13° / 11°12117.78.92.8
Dec11° / 1211782.2

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12575
22575
32575
42575
52575
62575
72575
82575
92674
102674
112773
122773
132773
142872
152872
162773
172773
182773
192773
202773
212773
222773
232773
242773
252674
262575
272575
282575
292674
302575
312575

Chance of precipitation in January

Any precipitation

Saint Peter Port gets around 98 mm of rain and snow over 15.7 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 51% and peaks near 54% on the wettest days, and about 0 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
154
254
354
454
554
654
753
853
953
1053
1153
1253
1353
1453
1553
1652
1752
1851
1951
2050
2150
2249
2349
2448
2547
2647
2747
2847
2946
3047
3147

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in January

Winds average 35 km/h in January.

Across January, daily wind ranges from about 33 km/h on the calmest days to 35 km/h at its breeziest. It stays fairly steady from day to day.

010203040151015202531
Wind speed (km/h)Feels
135windy
235windy
335windy
435windy
535windy
635windy
735windy
835windy
935windy
1035windy
1135windy
1235windy
1335windy
1435windy
1535windy
1635windy
1735windy
1834windy
1934windy
2034windy
2134windy
2234windy
2334windy
2434windy
2534windy
2634windy
2733windy
2833windy
2933windy
3033windy
3133windy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 8 hours at the start of January to 9 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over January. Sunrise moves from 8:13 AM to 7:53 AM, and sunset from 4:14 PM to 4:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.08:134:14
28.08:134:15
38.08:134:16
48.18:134:17
58.18:134:18
68.18:124:19
78.18:124:20
88.18:124:21
98.28:124:22
108.28:114:23
118.28:114:24
128.38:104:26
138.38:104:27
148.38:094:28
158.48:094:30
168.48:084:31
178.48:074:32
188.58:064:34
198.58:064:35
208.58:054:37
218.68:044:38
228.68:034:40
238.68:024:41
248.78:014:43
258.78:004:44
268.87:594:46
278.87:584:47
288.97:574:49
298.97:564:50
309.07:554:52
319.07:534:54

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.98 kWh/m².

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 — January's 0.98 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.8Dim
20.8Dim
30.8Dim
40.8Dim
50.8Dim
60.8Dim
70.9Dim
80.9Dim
90.9Dim
100.9Dim
110.9Dim
120.9Dim
130.9Dim
140.9Dim
151.0Dim
161.0Dim
171.0Dim
181.0Dim
191.0Dim
201.0Dim
211.1Dim
221.1Dim
231.1Dim
241.1Dim
251.1Dim
261.2Dim
271.2Dim
281.2Dim
291.2Dim
301.3Dim
311.3Dim
Planning a trip in January

Hazard calendar for Saint Peter Port

In seasonPeak

In January, 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.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is January a good time to visit Saint Peter Port?

Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

1.8
Sightseeing
11th-best month of the year
0.0
Beach & pool
7th-best month of the year

January is a weaker month for outdoor sightseeing in Saint Peter Port.

What to pack for Saint Peter Port in January

From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In January, Saint Peter Port sees daytime highs around 10°C and nights near 8°C. Pack a warm layer, rain gear and a windbreaker. About 16 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Saint Peter Port in January

The nearest coast averages about 10°C in January — 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.

10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan10Bracing
Feb10Bracing
Mar9Bracing
Apr10Bracing
May12Bracing
Jun14Bracing
Jul16Cool
Aug17Cool
Sep17Cool
Oct16Cool
Nov14Bracing
Dec12Bracing

UV index in Saint Peter Port in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowAug 12UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr5Moderate
May6High
Jun6High
Jul6High
Aug7High
Sep5Moderate
Oct3Moderate
Nov1Low
Dec1Low
Location & terrain

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.

3 km
105 m
16 km
108 m
80 km
191 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Saint Helier 43 km · Octeville 67 km · Équeurdreville-Hainneville 67 km · Cherbourg 69 km · Tourlaville 73 km · Saint-Malo 98 km · Lannion 105 km · Saint-Brieuc 106 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).