Heinola weather in January

In January, Heinola sees average daytime highs of -4°C and overnight lows near -8°C, with 39 mm of precipitation across 10.2 wet days and about 6 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near -4°C through the month. The sky is clear or mostly clear about 8% 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 06 min by month's end. Set against the rest of the year, January is Heinola's 10th-clearest and 2nd-windiest month. For the whole year in context, see Heinola's year-round climate.

Daytime high
-4°
11th warmest
Overnight low
-8°
2nd coldest
Precipitation
39 mm
10.2 wet days
Daylight
6 hours
9:26 AM – 3:24 PM
Cloud cover
86%
10th clearest
Wind
13 km/h
2nd windiest
Solar energy
0.23 kWh/m²
Travel score
0.0
out of 10

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near -4°C through the month.

A typical January day in Heinola reaches about -4°C in the afternoon and slips back to -8°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between -12°C and 2°C. Set against its neighbours, January runs about 2°C cooler than December and on par with February.

-20°-10°151015202531
Avg high (°C)Avg low (°C)
1-3-7
2-3-7
3-3-7
4-3-7
5-3-7
6-3-7
7-3-7
8-3-7
9-3-7
10-3-7
11-3-7
12-3-7
13-3-8
14-3-8
15-3-8
16-3-8
17-4-8
18-4-8
19-4-8
20-4-8
21-4-9
22-4-9
23-4-9
24-4-9
25-4-9
26-4-9
27-5-9
28-5-9
29-5-9
30-5-9
31-5-9

How January really feels in Heinola

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
31 feel bitter (≤ -10°C)

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

Heinola weather by month

How January compares with the rest of the year at a glance. January is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-4° / -8°3910.210.860.0
Feb-4° / -9°328.18.98.50.0
Mar / -6°318.48.111.30.0
Apr / -1°348.63.614.31.0
May14° / 469.50.2173.9
Jun18° / 10°7312.1018.85.3
Jul21° / 13°7612.20186.0
Aug19° / 12°7012.2015.55.7
Sep14° / 5110.2012.63.9
Oct / 57111.69.60.9
Nov / -1°4810.55.56.90.0
Dec-2° / -5°4611.49.85.20.0

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 5% of January, with mostly cloudy or overcast conditions the remaining 86%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11486
21486
31486
41486
51486
61387
71486
81486
91486
101486
111486
121486
131486
141486
151486
161486
171486
181486
191486
201486
211387
221387
231288
241387
251387
261387
271387
281387
291387
301387
311486

Chance of precipitation in January

Any precipitationSnow

Heinola gets around 39 mm of rain and snow over 10.2 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 34% and peaks near 35% on the wettest days, and about 11 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13535
23535
33535
43535
53535
63535
73535
83535
93535
103535
113535
123535
133535
143535
153435
163435
173435
183335
193335
203235
213235
223235
233235
243135
253235
263236
273236
283236
293237
303337
313337

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 13 km/h in January.

Across January, daily wind ranges from about 13 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 5 h 12 min at the start of January to 7 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 114 minutes over January. Sunrise moves from 9:43 AM to 8:55 AM, and sunset from 2:55 PM to 4:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
15.29:432:55
25.29:422:57
35.39:412:58
45.39:413:00
55.49:403:02
65.49:393:03
75.59:383:05
85.59:373:07
95.69:363:09
105.69:353:11
115.79:333:13
125.79:323:15
135.89:313:18
145.89:293:20
155.99:283:22
166.09:263:24
176.09:243:27
186.19:223:29
196.29:213:32
206.39:193:34
216.39:173:37
226.49:153:39
236.59:133:42
246.69:113:44
256.69:093:47
266.79:073:50
276.89:043:52
286.99:023:55
297.09:003:58
307.08:584:00
317.18:554:03

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 0.23 kWh/m².

For context, solar energy here swings from a low near 0.11 kWh/m² to a high of 5.25 kWh/m² in June across the year — January's 0.23 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.1Dim
20.1Dim
30.1Dim
40.1Dim
50.1Dim
60.1Dim
70.1Dim
80.2Dim
90.2Dim
100.2Dim
110.2Dim
120.2Dim
130.2Dim
140.2Dim
150.2Dim
160.2Dim
170.2Dim
180.2Dim
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 Heinola?

Our two travel scores rate January 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

January is a weaker month for outdoor sightseeing in Heinola.

What to pack for Heinola in January

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

In January, Heinola sees daytime highs around -4°C and nights near -8°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.

a warm layera heavy coatrain gear

UV index in Heinola 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 Heinola peaks around June 20 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 20UV 5Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun5Moderate
Jul5Moderate
Aug4Moderate
Sep2Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Heinola?

Heinola sits at 61.2°N, 26.0°E, 104 m above sea level, in Finland. The nearest listed city is Lahti, 32 km away.

AnjalaMäntsäläJanakkalaMikkeli

Topography around Heinola

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

Within 3 km, the terrain around Heinola has only modest variations in elevation — a maximum elevation change of 96 m around an average of 98 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 102 m; within 80 km, only modest variations in elevation — a maximum elevation change of 247 m.

The land around Heinola is covered by trees (65%) within 3 km, trees (71%) and water (20%) within 16 km, and trees (72%) within 80 km.

3 km
96 m
16 km
102 m
80 km
247 m
treesgrasslandcroplandartificial surfaceswater
January weather nearby: Lahti 32 km · Hollola 37 km · Orimattila 48 km · Kouvola 52 km · Anjala 72 km · Mäntsälä 75 km · Janakkala 85 km · Mikkeli 85 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 Heinola (61.2056°, 26.0381°, elevation 104 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. 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).