Hamina weather in December

In December, Hamina sees average daytime highs of -0°C and overnight lows near -4°C, with 60 mm of precipitation across 12.1 wet days and about 5.5 hours of daylight. It is the 10th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 1°C in the first days to -2°C by the end. The sky is clear or mostly clear about 8% of the time in December, and the air most often feels dry.

Daylight stretches from about 5 h 54 min at the start of December to 5 h 24 min by month's end. Set against the rest of the year, December is Hamina's 12th-clearest and 1st-windiest month. For the whole year in context, see Hamina's year-round climate.

Daytime high
-0°
10th warmest
Overnight low
-4°
4th coldest
Precipitation
60 mm
12.1 wet days
Daylight
5 h 24 min
9:27 AM – 2:48 PM
Cloud cover
85%
12th clearest
Wind
17 km/h
1st windiest
Solar energy
0.15 kWh/m²
Travel score
0.0
out of 10

Hamina is urban area in Hamina, Finland.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 1°C in the first days to -2°C by the end.

A typical December day in Hamina reaches about -0°C in the afternoon and slips back to -4°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -7°C and 5°C. Set against its neighbours, December runs about 3°C cooler than November and about 2°C warmer than January.

-20°-10°10°151015202531
Avg high (°C)Avg low (°C)
11-2
21-2
31-2
41-2
51-2
61-3
71-3
81-3
91-3
100-3
110-3
120-3
130-4
140-4
150-4
160-4
17-1-4
18-1-5
19-1-5
20-1-5
21-1-5
22-1-5
23-1-5
24-1-6
25-2-6
26-2-6
27-2-6
28-2-6
29-2-6
30-2-6
31-2-6

How December really feels in Hamina

Once humidity and wind are folded in, December 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
16 feel bitter (≤ -10°C)

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

Hamina weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-3° / -7°4811.1116.20.0
Feb-3° / -8°429.39.48.60.0
Mar / -5°389.27.311.30.0
Apr / -0°368.82.514.21.0
May14° / 449.40.116.94.0
Jun18° / 10°6510.7018.55.5
Jul21° / 14°5910.7017.86.4
Aug20° / 13°6811.5015.46.0
Sep15° / 5910.3012.64.2
Oct / 6511.81.19.71.3
Nov / -0°6112.15.170.0
Dec-0° / -4°6012.19.25.50.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 6% of December, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11288
21189
31189
41288
51288
61288
71288
81288
91288
101189
111189
121288
131387
141387
151387
161486
171486
181486
191486
201585
211585
221585
231585
241585
251684
261684
271783
281783
291783
301783
311783

Chance of precipitation in December

Any precipitationSnow

Hamina gets around 60 mm of rain and snow over 12.1 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 39% and peaks near 41% on the wettest days, and about 9 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
14127
24127
34127
44027
54027
64027
73927
83927
93927
103827
113828
123828
133728
143729
153729
163729
173730
183730
193730
203830
213831
223831
233831
243932
253932
263932
273933
283933
293933
303933
313933

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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.

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 December

Winds average 17 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 17 km/h on the calmest days to 17 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
117light breeze
217light breeze
317light breeze
417light breeze
517light breeze
617light breeze
717light breeze
817light breeze
917light breeze
1017light breeze
1117light breeze
1217light breeze
1317light breeze
1417light breeze
1517light breeze
1617light breeze
1717light breeze
1817light breeze
1917light breeze
2017light breeze
2117light breeze
2217light breeze
2317light breeze
2417light breeze
2517light breeze
2617light breeze
2717light breeze
2817light breeze
2917light breeze
3017light breeze
3117light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 5 h 54 min at the start of December to 5 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over December. Sunrise moves from 9:03 AM to 9:32 AM, and sunset from 2:59 PM to 2:57 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
15.99:032:59
25.99:052:58
35.89:072:56
45.89:092:55
55.79:112:54
65.79:132:53
75.69:142:52
85.69:162:52
95.69:182:51
105.59:192:50
115.59:212:50
125.59:222:49
135.49:232:49
145.49:242:48
155.49:262:48
165.49:272:48
175.39:282:48
185.39:282:48
195.39:292:48
205.39:302:49
215.39:312:49
225.39:312:49
235.39:312:50
245.39:322:50
255.39:322:51
265.39:322:52
275.39:322:53
285.49:322:54
295.49:322:55
305.49:322:56
315.49:322:57

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.15 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.15 kWh/m² to a high of 5.62 kWh/m² in June across the year — December's 0.15 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.2Dim
20.2Dim
30.2Dim
40.2Dim
50.2Dim
60.2Dim
70.2Dim
80.1Dim
90.1Dim
100.1Dim
110.1Dim
120.1Dim
130.1Dim
140.1Dim
150.1Dim
160.1Dim
170.1Dim
180.1Dim
190.1Dim
200.1Dim
210.1Dim
220.1Dim
230.1Dim
240.1Dim
250.1Dim
260.1Dim
270.1Dim
280.1Dim
290.1Dim
300.2Dim
310.2Dim
Planning a trip in December

Is December a good time to visit Hamina?

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

0.0
Sightseeing
8th-best month of the year
0.0
Beach & pool
6th-best month of the year

December is a weaker month for outdoor sightseeing in Hamina.

What to pack for Hamina in December

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

In December, Hamina sees daytime highs around -0°C and nights near -4°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Hamina in December

The nearest coast averages about 4°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 22 km away) is warmest in August at about 18°C and coldest in February near 0°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
Jan1Bracing
Feb0Bracing
Mar0Bracing
Apr2Bracing
May6Bracing
Jun12Bracing
Jul17Cool
Aug18Cool
Sep14Bracing
Oct10Bracing
Nov7Bracing
Dec4Bracing

UV index in Hamina in December

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Hamina peaks around June 21 at about 5 (high) — 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 21UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5High
Jul5Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Hamina?

Hamina sits at 60.6°N, 27.2°E, 3 m above sea level, in Finland. The nearest listed city is Karhula, 16 km away.

LappeenrantaOrimattilaVyborgPorvoo

Topography around Hamina

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

Within 3 km, the terrain around Hamina has only modest variations in elevation — a maximum elevation change of 40 m around an average of 9 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 98 m; within 80 km, only modest variations in elevation — a maximum elevation change of 230 m.

The land around Hamina is covered by trees (49%) within 3 km, trees (56%) and water (27%) within 16 km, and water (46%) and trees (45%) within 80 km.

3 km
40 m
16 km
98 m
80 km
230 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Karhula 16 km · Kotka 18 km · Anjala 24 km · Kouvola 43 km · Lappeenranta 76 km · Orimattila 84 km · Vyborg 86 km · Porvoo 86 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 Hamina (60.5697°, 27.1979°, 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).