Annual mean 8°C · wettest around December · prevailing wind SW
Warmest
21.9 °C
Coldest
-3.5 °C
Wettest
27%
Windiest
5.2 m/s
Prevailing
SW
4.4 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Pärnu over the whole year is 8°C. July is the hottest month, with highs of about 21°C; January is the coldest, with lows of about -3°C. The rainy (wet) season in Pärnu runs from October to February, peaking in December with a 25% chance of rain on a given day. The dry season is March to September; May is the driest month, at 8%. Winds in Pärnu are highest in January, averaging 4.1 m/s (15 km/h), and lightest in July, at 3.3 m/s (12 km/h). The prevailing wind is from the SW. The clearest skies in Pärnu come in May, when the sky is typically 43% covered; November is the cloudiest month, at 86%.
Month by month Pärnu climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
-2°C
-3°C
-7°C
24%
82%
4.1 m/s
0
0
0
February
-1°C
-2°C
-6°C
22%
75%
4.0 m/s
0
0
0
March
2°C
-1°C
-3°C
14%
62%
3.7 m/s
0
0
2
April
8°C
3°C
3°C
14%
54%
3.9 m/s
3
0
27
May
15°C
9°C
10°C
8%
43%
3.4 m/s
27
2
64
June
19°C
13°C
16°C
13%
47%
3.4 m/s
56
10
74
July
21°C
15°C
19°C
14%
52%
3.3 m/s
72
17
67
August
20°C
15°C
18°C
15%
51%
3.3 m/s
77
10
75
September
16°C
11°C
13°C
11%
54%
3.3 m/s
39
2
81
October
9°C
6°C
5°C
18%
68%
3.9 m/s
1
0
39
November
4°C
2°C
-1°C
24%
86%
3.9 m/s
0
0
8
December
0°C
-0°C
-5°C
25%
86%
4.0 m/s
0
0
0
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Pärnu weather by season
Year round, Pärnu has days of about -2°C at their warmest in January, its coolest month, and 21°C in July, its warmest; the coolest hours of the day run from -3°C to 15°C through the year, and the average temperature over the year is 8°C around the clock. Rain is most likely around December and least likely around May. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Pärnu weather in winterDecember to February
High -1°CLow -2°CRain 24%
Winter in Pärnu has typical daily highs of about -1°C and lows of about -2°C, with a 24% chance of rain on a given day.
Pärnu weather in springMarch to May
High 9°CLow 3°CRain 12%
Spring in Pärnu has typical daily highs of about 9°C and lows of about 3°C, with a 12% chance of rain on a given day.
Pärnu weather in summerJune to August
High 20°CLow 15°CRain 14%
Summer in Pärnu has typical daily highs of about 20°C and lows of about 15°C, with a 14% chance of rain on a given day.
Pärnu weather in autumnSeptember to November
High 10°CLow 6°CRain 18%
Autumn in Pärnu has typical daily highs of about 10°C and lows of about 6°C, with a 18% chance of rain on a given day.
When is the rainy season in Pärnu?
The rainy (wet) season in Pärnu runs from October to February, peaking in December with a 25% chance of rain on a given day. The dry season is March to September; May is the driest month, at 8%.
What time of year is Pärnu windiest?
Winds in Pärnu are highest in January, averaging 4.1 m/s (15 km/h), and lightest in July, at 3.3 m/s (12 km/h). The prevailing wind is from the SW.
What is the average temperature in Pärnu year round?
The average temperature in Pärnu over the whole year is 8°C. July is the hottest month, with highs of about 21°C; January is the coldest, with lows of about -3°C.