Annual mean 8°C · wettest around December · prevailing wind SW
Warmest
21.8 °C
Coldest
0.2 °C
Wettest
22%
Windiest
5.1 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 Nynäshamn over the whole year is 8°C. July is the hottest month, with highs of about 21°C; February is the coldest, with lows of about -1°C. Nynäshamn has no sharply defined rainy season: the chance of rain on a given day runs from 6% in April, the driest month, to 19% in December, the wettest. Winds in Nynäshamn are highest in January, averaging 4.3 m/s (15 km/h), and lightest in May, at 3.3 m/s (12 km/h). The prevailing wind is from the SW. The clearest skies in Nynäshamn come in June, when the sky is typically 34% covered; January is the cloudiest month, at 67%.
Month by month Nynäshamn 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
1°C
-0°C
-5°C
16%
67%
4.3 m/s
0
0
1
February
1°C
-1°C
-4°C
12%
60%
4.1 m/s
0
0
1
March
4°C
-0°C
-2°C
10%
54%
3.8 m/s
0
0
5
April
8°C
3°C
3°C
6%
42%
3.6 m/s
1
0
23
May
13°C
7°C
9°C
8%
39%
3.3 m/s
19
0
65
June
19°C
13°C
16°C
7%
34%
3.5 m/s
63
8
80
July
21°C
15°C
19°C
7%
36%
3.3 m/s
76
13
75
August
20°C
15°C
18°C
10%
37%
3.3 m/s
77
9
80
September
16°C
11°C
13°C
9%
44%
3.3 m/s
40
1
86
October
10°C
7°C
6°C
15%
48%
4.0 m/s
3
0
46
November
5°C
4°C
1°C
18%
60%
4.1 m/s
0
0
14
December
2°C
1°C
-3°C
19%
62%
4.2 m/s
0
0
1
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 Nynäshamn weather by season
Year round, Nynäshamn has days of about 1°C at their warmest in January, its coolest month, and 21°C in July, its warmest; the coolest hours of the day run from -1°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 April. 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.
Nynäshamn weather in winterDecember to February
High 1°CLow -0°CRain 16%
Winter in Nynäshamn has typical daily highs of about 1°C and lows of about -0°C, with a 16% chance of rain on a given day.
Nynäshamn weather in springMarch to May
High 8°CLow 3°CRain 8%
Spring in Nynäshamn has typical daily highs of about 8°C and lows of about 3°C, with a 8% chance of rain on a given day.
Nynäshamn weather in summerJune to August
High 20°CLow 14°CRain 8%
Summer in Nynäshamn has typical daily highs of about 20°C and lows of about 14°C, with a 8% chance of rain on a given day.
Nynäshamn weather in autumnSeptember to November
High 10°CLow 7°CRain 14%
Autumn in Nynäshamn has typical daily highs of about 10°C and lows of about 7°C, with a 14% chance of rain on a given day.
When is the rainy season in Nynäshamn?
Nynäshamn has no sharply defined rainy season: the chance of rain on a given day runs from 6% in April, the driest month, to 19% in December, the wettest.
What time of year is Nynäshamn windiest?
Winds in Nynäshamn are highest in January, averaging 4.3 m/s (15 km/h), and lightest in May, at 3.3 m/s (12 km/h). The prevailing wind is from the SW.
What is the average temperature in Nynäshamn year round?
The average temperature in Nynäshamn over the whole year is 8°C. July is the hottest month, with highs of about 21°C; February is the coldest, with lows of about -1°C.