Pärnu weather in December

In December, Pärnu sees average daytime highs of 1°C and overnight lows near -3°C, with 52 mm of precipitation across 11.3 wet days and about 6.2 hours of daylight. It is the 10th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 2°C in the first days to -0°C by the end. The sky is clear or mostly clear about 9% of the time in December, and the air most often feels dry.

Daylight stretches from about 6 h 36 min at the start of December to 6 h 06 min by month's end. Set against the rest of the year, December is Pärnu's 11th-clearest and 1st-windiest month. For the whole year in context, see Pärnu's year-round climate.

Daytime high
10th warmest
Overnight low
-3°
4th coldest
Precipitation
52 mm
11.3 wet days
Daylight
6 h 06 min
9:16 AM – 3:20 PM
Cloud cover
83%
11th clearest
Wind
15 km/h
1st windiest
Solar energy
0.23 kWh/m²
Travel score
0.0
out of 10

Pärnu is city in Estonia.

Density
1,214/km²
people per km²
Founded
1251

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 2°C in the first days to -0°C by the end.

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

-15°-10°-5°10°151015202531
Avg high (°C)Avg low (°C)
12-2
22-2
32-2
42-2
52-2
62-2
71-2
81-2
91-2
101-2
111-3
121-3
131-3
141-3
151-3
161-3
171-3
180-3
190-4
200-4
210-4
220-4
230-4
240-4
250-4
260-4
270-4
280-4
290-5
300-5
310-5

How December really feels in Pärnu

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
5 feel bitter (≤ -10°C)

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

Pärnu weather by month

How December compares with the rest of the year at a glance. December is the 10th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -6°4811.18.36.80.0
Feb-1° / -7°439.58.38.90.0
Mar / -4°409.75.811.40.1
Apr10° / 42102142.3
May16° / 469.50.116.45.2
Jun20° / 10°8312.4017.85.9
Jul22° / 13°8312.3017.36.4
Aug21° / 12°8612.8015.16.0
Sep16° / 5610.7012.54.7
Oct / 6211.70.79.91.9
Nov / 5210.63.57.50.1
Dec / -3°5211.37.26.20.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 7% of December, with mostly cloudy or overcast conditions the remaining 84%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
11486
21486
31486
41486
51486
61585
71486
81486
91486
101486
111585
121585
131585
141585
151585
161684
171684
181684
191783
201882
211882
221882
231882
241882
251882
261783
271783
281882
291882
301882
311882

Chance of precipitation in December

Any precipitationSnow

Pärnu gets around 52 mm of rain and snow over 11.3 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 36% and peaks near 40% on the wettest days, and about 7 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13417
23417
33417
43518
53518
63519
73619
83620
93620
103720
113721
123721
133622
143622
153623
163623
173624
183624
193625
203625
213625
223626
233626
243727
253727
263728
273828
283828
293929
304029
314030

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 15 km/h in December, the windiest month of the year.

Across December, daily wind ranges from about 15 km/h on the calmest days to 15 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
115light breeze
215light breeze
315light breeze
415light breeze
515light breeze
615light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2015light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 6 h 36 min at the start of December to 6 h 06 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 8:55 AM to 9:21 AM, and sunset from 3:28 PM to 3:29 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
16.68:553:28
26.58:573:27
36.58:593:26
46.49:003:26
56.49:023:25
66.39:043:24
76.39:053:23
86.39:063:23
96.29:083:22
106.29:093:22
116.29:113:21
126.29:123:21
136.19:133:21
146.19:143:21
156.19:153:20
166.19:163:20
176.19:173:20
186.09:183:21
196.09:183:21
206.09:193:21
216.09:203:21
226.09:203:22
236.09:213:22
246.09:213:23
256.09:213:24
266.09:213:24
276.19:223:25
286.19:223:26
296.19:223:27
306.19:213:28
316.19:213:29

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 0.23 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 0.23 kWh/m² to a high of 5.72 kWh/m² in June across the year — December's 0.23 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
10.3Dim
20.3Dim
30.3Dim
40.3Dim
50.3Dim
60.3Dim
70.2Dim
80.2Dim
90.2Dim
100.2Dim
110.2Dim
120.2Dim
130.2Dim
140.2Dim
150.2Dim
160.2Dim
170.2Dim
180.2Dim
190.2Dim
200.2Dim
210.2Dim
220.2Dim
230.2Dim
240.2Dim
250.2Dim
260.2Dim
270.2Dim
280.2Dim
290.2Dim
300.2Dim
310.2Dim
Planning a trip in December

Is December a good time to visit Pärnu?

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

0.0
Sightseeing
10th-best month of the year
0.0
Beach & pool
8th-best month of the year

December is a weaker month for outdoor sightseeing in Pärnu.

What to pack for Pärnu in December

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

In December, Pärnu sees daytime highs around 1°C and nights near -3°C. Pack a warm layer and a heavy coat. Worth having: rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Pärnu 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 offshore is warmest in August at about 19°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
Jan2Bracing
Feb0Bracing
Mar1Bracing
Apr3Bracing
May9Bracing
Jun14Bracing
Jul18Cool
Aug19Cool
Sep15Cool
Oct11Bracing
Nov7Bracing
Dec4Bracing

UV index in Pärnu 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 Pärnu peaks around June 19 at about 6 (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 5 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighModerateLowJun 19UV 6Dec 19UV 0
UV index (midday)Level
Jan0Low
Feb1Low
Mar2Low
Apr3Moderate
May4Moderate
Jun6High
Jul5Moderate
Aug5Moderate
Sep3Moderate
Oct1Low
Nov0Low
Dec0Low
Location & terrain

Where is Pärnu?

Pärnu sits at 58.4°N, 24.5°E, 6 m above sea level, in Estonia. The nearest listed city is Viljandi, 64 km away.

ViljandiMuhuHaapsaluRuhnuValmieraNõmmeValgaMustamäe

Topography around Pärnu

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

Within 3 km, the terrain around Pärnu has only modest variations in elevation — a maximum elevation change of 35 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 54 m; within 80 km, only modest variations in elevation — a maximum elevation change of 164 m.

The land around Pärnu is covered by water (28%), artificial surfaces (25%) and trees (24%) within 3 km, trees (33%) and water (27%) within 16 km, and trees (48%) and water (24%) within 80 km.

3 km
35 m
16 km
54 m
80 km
164 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
December weather nearby: Viljandi 64 km · Muhu 77 km · Haapsalu 83 km · Ruhnu 98 km · Valmiera 109 km · Nõmme 111 km · Valga 113 km · Mustamäe 114 km

Estonia travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 66% of US
price level, 2025
GDP per capita
$34,418
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
99%
of population, 2024
Homicide rate
1.5
per 100k, 2023
Road deaths
4.5
per 100k/yr, 2019
Income group
High
World Bank
English
High
EF EPI 561
Religion
none 58%Orthodox 17%Protestant 9%other 3%

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 Pärnu (58.3859°, 24.4971°, elevation 6 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).