Annual mean 10°C · wettest around December · prevailing wind NE
Warmest
21.9 °C
Coldest
0.5 °C
Wettest
42%
Windiest
3.1 m/s
Prevailing
NE
2.5 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
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 Arth over the whole year is 10°C. July is the hottest month, with highs of about 21°C; January is the coldest, with lows of about -0°C. Arth has no sharply defined rainy season: the chance of rain on a given day runs from 24% in October, the driest month, to 36% in December, the wettest. Winds in Arth are highest in April, averaging 2.5 m/s (9 km/h), and lightest in August, at 1.9 m/s (7 km/h). The prevailing wind is from the NE. The clearest skies in Arth come in June, when the sky is typically 56% covered; December is the cloudiest month, at 78%.
Month by month Arth 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
-0°C
-2°C
33%
75%
2.4 m/s
0
0
8
February
4°C
1°C
1°C
27%
67%
2.4 m/s
0
0
19
March
7°C
2°C
3°C
31%
63%
2.4 m/s
2
0
34
April
11°C
5°C
8°C
28%
60%
2.5 m/s
20
0
57
May
15°C
9°C
12°C
34%
66%
2.2 m/s
41
3
69
June
20°C
14°C
19°C
30%
56%
2.1 m/s
67
23
56
July
21°C
15°C
21°C
29%
58%
2.0 m/s
70
29
50
August
21°C
15°C
21°C
26%
57%
1.9 m/s
65
33
47
September
17°C
11°C
16°C
25%
60%
1.9 m/s
59
10
69
October
13°C
8°C
11°C
24%
62%
2.0 m/s
29
0
71
November
6°C
3°C
3°C
31%
74%
2.1 m/s
1
0
30
December
3°C
1°C
-1°C
36%
78%
2.3 m/s
0
0
9
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 Arth weather by season
Year round, Arth 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 -0°C to 15°C through the year, and the average temperature over the year is 10°C around the clock. Rain is most likely around December 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.
Arth weather in winterDecember to February
High 3°CLow 0°CRain 32%
Winter in Arth has typical daily highs of about 3°C and lows of about 0°C, with a 32% chance of rain on a given day.
Arth weather in springMarch to May
High 11°CLow 5°CRain 31%
Spring in Arth has typical daily highs of about 11°C and lows of about 5°C, with a 31% chance of rain on a given day.
Arth weather in summerJune to August
High 21°CLow 15°CRain 29%
Summer in Arth has typical daily highs of about 21°C and lows of about 15°C, with a 29% chance of rain on a given day.
Arth weather in autumnSeptember to November
High 12°CLow 8°CRain 27%
Autumn in Arth has typical daily highs of about 12°C and lows of about 8°C, with a 27% chance of rain on a given day.
When is the rainy season in Arth?
Arth has no sharply defined rainy season: the chance of rain on a given day runs from 24% in October, the driest month, to 36% in December, the wettest.
What time of year is Arth windiest?
Winds in Arth are highest in April, averaging 2.5 m/s (9 km/h), and lightest in August, at 1.9 m/s (7 km/h). The prevailing wind is from the NE.
What is the average temperature in Arth year round?
The average temperature in Arth over the whole year is 10°C. July is the hottest month, with highs of about 21°C; January is the coldest, with lows of about -0°C.