Rauma weather in January

In January, Rauma sees average daytime highs of -0°C and overnight lows near -3°C, with 45 mm of precipitation across 10.9 wet days and about 6.1 hours of daylight. It is the 11th-warmest and 8th-wettest month of the year here.

Highs ease over the month, from about 0°C in the first days to -1°C by the end. The sky is clear or mostly clear about 10% of the time in January, and the air most often feels dry.

Daylight stretches from about 5 h 12 min at the start of January to 7 h 12 min by month's end. Set against the rest of the year, January is Rauma's 12th-clearest and 2nd-windiest month. For the whole year in context, see Rauma's year-round climate.

Daytime high
-0°
11th warmest
Overnight low
-3°
2nd coldest
Precipitation
45 mm
10.9 wet days
Daylight
6 hours
9:43 AM – 3:43 PM
Cloud cover
81%
12th clearest
Wind
25 km/h
2nd windiest
Solar energy
0.24 kWh/m²
Travel score
0.0
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 0°C in the first days to -1°C by the end.

A typical January day in Rauma reaches about -0°C in the afternoon and slips back to -3°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between -6°C and 4°C. Set against its neighbours, January runs about 2°C cooler than December and about 1°C warmer than February.

-15°-10°-5°151015202531
Avg high (°C)Avg low (°C)
11-2
20-2
30-2
40-2
50-3
60-3
70-3
80-3
90-3
100-3
110-3
120-3
130-3
140-3
150-3
160-3
170-3
180-3
190-3
200-3
210-3
220-4
23-1-4
24-1-4
25-1-4
26-1-4
27-1-4
28-1-4
29-1-4
30-1-4
31-1-4

How January really feels in Rauma

Once humidity and wind are folded in, January averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
13 feel bitter (≤ -10°C)

The story in January is cold — wind chill drags the overnight "feels like" below the raw low.

Rauma weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 8th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-0° / -3°4510.996.10.0
Feb-1° / -5°348.47.58.50.0
Mar / -3°338.25.711.30.0
Apr / 327.41.814.30.2
May / 387.40.1172.0
Jun14° / 11°559.4018.74.0
Jul18° / 15°6410.30185.8
Aug18° / 15°7112.4015.55.5
Sep14° / 11°6410.6012.63.8
Oct / 7312.70.79.61.4
Nov / 6312.53.36.90.1
Dec / -1°5712.96.65.30.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 10% of the time in January, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 8% of January, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12080
21882
31882
41882
51783
61783
71783
81783
91783
101783
111783
121783
131783
141882
151882
161882
171783
181783
191783
201783
211882
221882
231783
241783
251783
261783
271882
281981
291981
301981
311981

Chance of precipitation in January

Any precipitationSnow

Rauma gets around 45 mm of rain and snow over 10.9 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 36% and peaks near 40% on the wettest days, and about 9 days bring snow. The odds ease toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
14028
24028
34029
44029
54029
64029
74029
84029
93928
103928
113928
123827
133827
143727
153727
163627
173527
183527
193427
203328
213228
223228
233229
243129
253130
263231
273231
283232
293232
303232
313232

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.

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 5 h 12 min at the start of January to 7 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 120 minutes over January. Sunrise moves from 10:00 AM to 9:13 AM, and sunset from 3:15 PM to 4:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
15.210:003:15
25.39:593:16
35.39:593:17
45.49:583:19
55.49:573:21
65.49:563:22
75.59:553:24
85.59:543:26
95.69:533:28
105.69:523:30
115.79:513:32
125.79:493:34
135.89:483:36
145.99:463:39
155.99:453:41
166.09:433:43
176.19:423:46
186.19:403:48
196.29:383:50
206.39:363:53
216.49:343:55
226.49:323:58
236.59:304:01
246.69:284:03
256.79:264:06
266.79:244:08
276.89:224:11
286.99:204:14
297.09:174:16
307.19:154:19
317.29:134:22

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.24 kWh/m².

For context, solar energy here swings from a low near 0.13 kWh/m² to a high of 6.13 kWh/m² in June across the year — January's 0.24 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.1Dim
20.1Dim
30.1Dim
40.1Dim
50.2Dim
60.2Dim
70.2Dim
80.2Dim
90.2Dim
100.2Dim
110.2Dim
120.2Dim
130.2Dim
140.2Dim
150.2Dim
160.2Dim
170.3Dim
180.3Dim
190.3Dim
200.3Dim
210.3Dim
220.3Dim
230.3Dim
240.3Dim
250.3Dim
260.4Dim
270.4Dim
280.4Dim
290.4Dim
300.4Dim
310.5Dim
Planning a trip in January

Is January a good time to visit Rauma?

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

0.0
Sightseeing
9th-best month of the year
0.0
Beach & pool
5th-best month of the year

January is a weaker month for outdoor sightseeing in Rauma.

What to pack for Rauma in January

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

In January, Rauma sees daytime highs around -0°C and nights near -3°C. Pack a warm layer and a heavy coat. Worth having: rain gear and a windbreaker. About 11 days see rain.

a warm layera heavy coatrain geara windbreaker

Sea temperature near Rauma in January

The nearest coast averages about 2°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 August at about 17°C and coldest in March near 1°C.

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

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May5Bracing
Jun10Bracing
Jul15Cool
Aug17Cool
Sep14Bracing
Oct10Bracing
Nov7Bracing
Dec4Bracing

UV index in Rauma in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 0. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Rauma peaks around June 15 at about 5 (moderate) — a little sun protection helps at midday. It bottoms out near December 19 at about 0 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 4 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateLowJun 15UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar1Low
Apr2Moderate
May4Moderate
Jun5Moderate
Jul4Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Rauma?

Rauma sits at 61.1°N, 21.5°E, 14 m above sea level, in Finland. The nearest listed city is Pori, 42 km away.

VammalaNaantaliSastamalaRaisioTurkuLietoLoimaa

Topography around Rauma

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

Within 3 km, the terrain around Rauma has only modest variations in elevation — a maximum elevation change of 43 m around an average of 13 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 58 m; within 80 km, only modest variations in elevation — a maximum elevation change of 171 m.

The land around Rauma is covered by trees (54%) and artificial surfaces (29%) within 3 km, trees (53%) and water (31%) within 16 km, and trees (49%) and water (37%) within 80 km.

3 km
43 m
16 km
58 m
80 km
171 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
January weather nearby: Pori 42 km · Vammala 78 km · Naantali 78 km · Sastamala 79 km · Raisio 80 km · Turku 86 km · Lieto 86 km · Loimaa 89 km

Finland travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 85% of US
price level, 2025
GDP per capita
$56,149
2025
Happiness
7.8 / 10
World Happiness, 2025
Safe drinking water
100%
of population, 2024
Homicide rate
1
per 100k, 2023
Road deaths
3.9
per 100k/yr, 2019
Income group
High
World Bank
English
Very high
EF EPI 603
Religion
Lutheran 67%none 31%other 2%Greek Orthodox 1%

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 Rauma (61.1272°, 21.5113°, elevation 14 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).