Annual mean 11°C · wettest around December · prevailing wind SW
Warmest
22.2 °C
Coldest
5.0 °C
Wettest
59%
Windiest
6.8 m/s
Prevailing
SW
5.8 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 Alphen aan den Rijn over the whole year is 11°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C. Alphen aan den Rijn has no sharply defined rainy season: the chance of rain on a given day runs from 29% in May, the driest month, to 53% in December, the wettest. Winds in Alphen aan den Rijn are highest in February, averaging 6.0 m/s (22 km/h), and lightest in September, at 4.2 m/s (15 km/h). The prevailing wind is from the SW. The clearest skies in Alphen aan den Rijn come in August, when the sky is typically 42% covered; December is the cloudiest month, at 71%.
Month by month Alphen aan den Rijn 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
6°C
4°C
0°C
51%
70%
5.8 m/s
0
0
6
February
7°C
4°C
1°C
48%
59%
6.0 m/s
0
0
14
March
10°C
4°C
4°C
44%
53%
5.2 m/s
2
0
29
April
13°C
7°C
8°C
36%
44%
4.8 m/s
12
0
55
May
17°C
11°C
13°C
29%
43%
4.5 m/s
39
2
75
June
20°C
15°C
18°C
29%
44%
4.5 m/s
67
12
71
July
21°C
16°C
19°C
29%
44%
4.4 m/s
72
12
69
August
22°C
16°C
20°C
30%
42%
4.3 m/s
73
17
65
September
19°C
14°C
17°C
37%
45%
4.2 m/s
61
8
74
October
15°C
11°C
11°C
45%
57%
5.0 m/s
20
0
72
November
10°C
7°C
5°C
52%
62%
5.2 m/s
1
0
35
December
7°C
5°C
2°C
53%
71%
5.7 m/s
0
0
14
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 Alphen aan den Rijn weather by season
Year round, Alphen aan den Rijn has days of about 6°C at their warmest in January, its coolest month, and 22°C in August, its warmest; the coolest hours of the day run from 4°C to 16°C through the year, and the average temperature over the year is 11°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.
Alphen aan den Rijn weather in winterDecember to February
High 7°CLow 4°CRain 50%
Winter in Alphen aan den Rijn has typical daily highs of about 7°C and lows of about 4°C, with a 50% chance of rain on a given day.
Alphen aan den Rijn weather in springMarch to May
High 13°CLow 8°CRain 36%
Spring in Alphen aan den Rijn has typical daily highs of about 13°C and lows of about 8°C, with a 36% chance of rain on a given day.
Alphen aan den Rijn weather in summerJune to August
High 21°CLow 16°CRain 30%
Summer in Alphen aan den Rijn has typical daily highs of about 21°C and lows of about 16°C, with a 30% chance of rain on a given day.
Alphen aan den Rijn weather in autumnSeptember to November
High 14°CLow 10°CRain 44%
Autumn in Alphen aan den Rijn has typical daily highs of about 14°C and lows of about 10°C, with a 44% chance of rain on a given day.
When is the rainy season in Alphen aan den Rijn?
Alphen aan den Rijn has no sharply defined rainy season: the chance of rain on a given day runs from 29% in May, the driest month, to 53% in December, the wettest.
What time of year is Alphen aan den Rijn windiest?
Winds in Alphen aan den Rijn are highest in February, averaging 6.0 m/s (22 km/h), and lightest in September, at 4.2 m/s (15 km/h). The prevailing wind is from the SW.
What is the average temperature in Alphen aan den Rijn year round?
The average temperature in Alphen aan den Rijn over the whole year is 11°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C.