Annual mean 7°C · wettest around May · prevailing wind NW
Warmest
19.1 °C
Coldest
-1.5 °C
Wettest
42%
Windiest
3.4 m/s
Prevailing
NW
3.0 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 Sarnen over the whole year is 7°C. July is the hottest month, with highs of about 19°C; January is the coldest, with lows of about -2°C. Sarnen has no sharply defined rainy season: the chance of rain on a given day runs from 25% in October, the driest month, to 36% in May, the wettest. Winds in Sarnen are highest in January, averaging 3.4 m/s (12 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the NW. The clearest skies in Sarnen come in August, when the sky is typically 54% covered; December is the cloudiest month, at 73%.
Month by month Sarnen 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
-0°C
-2°C
-5°C
33%
70%
3.4 m/s
0
0
5
February
2°C
-1°C
-2°C
29%
64%
3.2 m/s
0
0
13
March
5°C
0°C
0°C
33%
59%
3.1 m/s
1
0
23
April
8°C
3°C
4°C
29%
58%
3.0 m/s
12
0
42
May
12°C
7°C
9°C
36%
66%
2.8 m/s
27
1
56
June
17°C
12°C
16°C
31%
56%
2.6 m/s
54
14
58
July
19°C
13°C
17°C
29%
57%
2.5 m/s
60
19
56
August
19°C
13°C
17°C
26%
54%
2.3 m/s
57
22
54
September
15°C
9°C
13°C
25%
58%
2.4 m/s
45
5
63
October
11°C
6°C
8°C
25%
59%
2.7 m/s
21
0
58
November
4°C
2°C
0°C
33%
71%
2.9 m/s
1
0
22
December
1°C
-1°C
-3°C
36%
73%
3.2 m/s
0
0
6
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 Sarnen weather by season
Year round, Sarnen has days of about -0°C at their warmest in January, its coolest month, and 19°C in July, its warmest; the coolest hours of the day run from -2°C to 13°C through the year, and the average temperature over the year is 7°C around the clock. Rain is most likely around May and least likely around October. 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.
Sarnen weather in winterDecember to February
High 1°CLow -1°CRain 32%
Winter in Sarnen has typical daily highs of about 1°C and lows of about -1°C, with a 32% chance of rain on a given day.
Sarnen weather in springMarch to May
High 8°CLow 3°CRain 33%
Spring in Sarnen has typical daily highs of about 8°C and lows of about 3°C, with a 33% chance of rain on a given day.
Sarnen weather in summerJune to August
High 18°CLow 13°CRain 28%
Summer in Sarnen has typical daily highs of about 18°C and lows of about 13°C, with a 28% chance of rain on a given day.
Sarnen weather in autumnSeptember to November
High 10°CLow 6°CRain 28%
Autumn in Sarnen has typical daily highs of about 10°C and lows of about 6°C, with a 28% chance of rain on a given day.
When is the rainy season in Sarnen?
Sarnen has no sharply defined rainy season: the chance of rain on a given day runs from 25% in October, the driest month, to 36% in May, the wettest.
What time of year is Sarnen windiest?
Winds in Sarnen are highest in January, averaging 3.4 m/s (12 km/h), and lightest in August, at 2.3 m/s (8 km/h). The prevailing wind is from the NW.
What is the average temperature in Sarnen year round?
The average temperature in Sarnen over the whole year is 7°C. July is the hottest month, with highs of about 19°C; January is the coldest, with lows of about -2°C.