Southsea weather in January

In January, Southsea sees average daytime highs of 8°C and overnight lows near 5°C, with 84 mm of precipitation across 13.4 wet days and about 8.2 hours of daylight. It is the 11th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 8°C through the month. The sky is clear or mostly clear about 17% of the time in January, and the air most often feels dry.

Daylight stretches from about 7 h 48 min at the start of January to 8 h 54 min by month's end. Set against the rest of the year, January is Southsea's 12th-clearest and 1st-windiest month. For the whole year in context, see Southsea's year-round climate.

Daytime high
11th warmest
Overnight low
2nd coldest
Precipitation
84 mm
13.4 wet days
Daylight
8 h 12 min
8:08 AM – 4:19 PM
Cloud cover
72%
12th clearest
Wind
25 km/h
1st windiest
Solar energy
0.87 kWh/m²
Travel score
1.3
out of 10

Southsea is town in Hampshire, England.

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 8°C through the month.

A typical January day in Southsea reaches about 8°C in the afternoon and slips back to 5°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 11°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)
185
285
385
485
585
685
785
885
985
1085
1185
1285
1385
1485
1585
1685
1785
1885
1985
2085
2185
2285
2385
2485
2585
2685
2785
2885
2985
3085
3185

Southsea weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 8413.40.68.21.3
Feb / 6010.50.59.71.2
Mar / 5010.10.311.51.9
Apr11° / 529.70.113.52.9
May14° / 10°509.1015.24.2
Jun17° / 13°519.5016.25.4
Jul19° / 15°529.6015.86.2
Aug19° / 15°649.9014.36.1
Sep18° / 14°6210.2012.45.6
Oct15° / 11°9613.4010.44.0
Nov11° / 9913.808.72.5
Dec / 9213.40.37.81.6

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of January, with mostly cloudy or overcast conditions the remaining 70%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13169
23268
33268
43367
53268
63268
73268
83268
93268
103169
113268
123268
133169
143169
153169
163169
173169
183169
193169
203070
213070
222971
232971
242971
252971
262872
272872
282773
292773
302773
312773

Chance of precipitation in January

Any precipitationSnow

Southsea gets around 84 mm of rain and snow over 13.4 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 43% and peaks near 47% on the wettest days, and about 1 day brings snow. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)Snow chance (%)
1431
2431
3442
4442
5452
6452
7462
8462
9462
10472
11472
12472
13472
14462
15462
16462
17452
18452
19442
20432
21422
22422
23412
24402
25392
26382
27382
28372
29372
30372
31373

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 25 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 24 km/h on the calmest days to 25 km/h at its breeziest. It stays fairly steady from day to day.

0102030151015202531
Wind speed (km/h)Feels
125breezy
225breezy
325breezy
425breezy
525breezy
625breezy
725breezy
825breezy
925breezy
1025breezy
1125breezy
1225breezy
1325breezy
1425breezy
1525breezy
1625breezy
1725breezy
1825breezy
1924breezy
2024breezy
2124breezy
2224breezy
2324breezy
2424breezy
2524breezy
2624breezy
2724breezy
2824breezy
2924breezy
3024breezy
3124breezy

Sunrise & sunset in January

DaylightNight

Daylight runs from about 7 h 48 min at the start of January to 8 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over January. Sunrise moves from 8:14 AM to 7:52 AM, and sunset from 4:02 PM to 4:43 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
17.88:144:02
27.88:134:02
37.88:134:03
47.98:134:04
57.98:134:06
67.98:134:07
77.98:134:08
87.98:124:09
98.08:124:10
108.08:114:11
118.08:114:13
128.18:104:14
138.18:104:15
148.18:094:17
158.28:094:18
168.28:084:19
178.28:074:21
188.38:064:22
198.38:054:24
208.38:054:25
218.48:044:27
228.48:034:28
238.58:024:30
248.58:014:32
258.67:594:33
268.67:584:35
278.77:574:37
288.77:564:38
298.87:554:40
308.87:534:42
318.97:524:43

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.87 kWh/m².

For context, solar energy here swings from a low near 0.71 kWh/m² to a high of 5.67 kWh/m² in June across the year — January's 0.87 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.7Dim
20.7Dim
30.7Dim
40.7Dim
50.7Dim
60.7Dim
70.8Dim
80.8Dim
90.8Dim
100.8Dim
110.8Dim
120.8Dim
130.8Dim
140.8Dim
150.8Dim
160.9Dim
170.9Dim
180.9Dim
190.9Dim
200.9Dim
210.9Dim
221.0Dim
231.0Dim
241.0Dim
251.0Dim
261.0Dim
271.1Dim
281.1Dim
291.1Dim
301.1Dim
311.1Dim
Planning a trip in January

Is January a good time to visit Southsea?

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

1.3
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 Southsea.

What to pack for Southsea in January

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

In January, Southsea sees daytime highs around 8°C and nights near 5°C. Pack a warm layer. Worth having: rain gear and a windbreaker. About 13 days see rain.

a warm layerrain geara windbreaker

Sea temperature near Southsea in January

The nearest coast averages about 9°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 18 km away) is warmest in August at about 18°C and coldest in March near 8°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan9Bracing
Feb8Bracing
Mar8Bracing
Apr9Bracing
May11Bracing
Jun14Bracing
Jul16Cool
Aug18Cool
Sep17Cool
Oct16Cool
Nov13Bracing
Dec11Bracing

UV index in Southsea 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 Southsea peaks around August 11 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 11UV 6Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar3Moderate
Apr4Moderate
May6High
Jun6High
Jul6High
Aug6High
Sep4Moderate
Oct2Moderate
Nov1Low
Dec1Low
Location & terrain

Where is Southsea?

Southsea sits at 50.8°N, 1.1°W, 3 m above sea level, in United Kingdom. The nearest listed city is Portsmouth, 2.0 km away.

Topography around Southsea

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Southsea.

Within 3 km, the terrain around Southsea has only modest variations in elevation — a maximum elevation change of 18 m around an average of 3 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 135 m; within 80 km, significant variations in elevation — a maximum elevation change of 302 m.

The land around Southsea is covered by water (54%) and artificial surfaces (35%) within 3 km, water (46%) within 16 km, and water (35%), grassland (24%) and trees (20%) within 80 km.

3 km
18 m
16 km
135 m
80 km
302 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Portsmouth 2.0 km · Gosport 3.0 km · Ryde 8.0 km · South Hayling 8.0 km · Hayling Island 9.0 km · Fareham 10 km · Havant 11 km · Waterlooville 12 km

United Kingdom travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type D / G / M
230 V · 50 Hz
Prices
≈ 89% of US
price level, 2025
GDP per capita
$57,602
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1.1
per 100k, 2021
Road deaths
3.2
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 60%none 26%Muslim 4%other 2%

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 Southsea (50.7835°, -1.0907°, elevation 3 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).