Annual mean 12°C · wettest around December · prevailing wind SW
Warmest
22.1 °C
Coldest
5.2 °C
Wettest
53%
Windiest
7.2 m/s
Prevailing
SW
6.1 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 Leiden over the whole year is 12°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C. The rainy (wet) season in Leiden runs from October to March, peaking in December with a 51% chance of rain on a given day. The dry season is April to September; May is the driest month, at 26%. Winds in Leiden are highest in February, averaging 6.4 m/s (23 km/h), and lightest in August, at 4.7 m/s (17 km/h). The prevailing wind is from the SW. The clearest skies in Leiden come in August, when the sky is typically 36% covered; December is the cloudiest month, at 68%.
Month by month Leiden 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
47%
67%
6.2 m/s
0
0
6
February
7°C
4°C
1°C
44%
56%
6.4 m/s
0
0
14
March
9°C
5°C
4°C
40%
47%
5.6 m/s
2
0
28
April
13°C
7°C
7°C
33%
38%
5.1 m/s
11
0
54
May
17°C
11°C
13°C
26%
37%
4.8 m/s
38
2
76
June
20°C
15°C
17°C
26%
37%
4.9 m/s
66
12
73
July
21°C
16°C
19°C
27%
38%
4.8 m/s
72
11
71
August
22°C
17°C
19°C
28%
36%
4.7 m/s
73
16
67
September
19°C
14°C
16°C
35%
40%
4.7 m/s
60
7
75
October
15°C
11°C
11°C
42%
50%
5.6 m/s
20
0
71
November
10°C
7°C
5°C
49%
57%
5.7 m/s
1
0
35
December
7°C
5°C
2°C
51%
68%
6.2 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 Leiden weather by season
Year round, Leiden 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 17°C through the year, and the average temperature over the year is 12°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.
Leiden weather in winterDecember to February
High 7°CLow 5°CRain 47%
Winter in Leiden has typical daily highs of about 7°C and lows of about 5°C, with a 47% chance of rain on a given day.
Leiden weather in springMarch to May
High 13°CLow 8°CRain 33%
Spring in Leiden has typical daily highs of about 13°C and lows of about 8°C, with a 33% chance of rain on a given day.
Leiden weather in summerJune to August
High 21°CLow 16°CRain 27%
Summer in Leiden has typical daily highs of about 21°C and lows of about 16°C, with a 27% chance of rain on a given day.
Leiden weather in autumnSeptember to November
High 15°CLow 11°CRain 42%
Autumn in Leiden has typical daily highs of about 15°C and lows of about 11°C, with a 42% chance of rain on a given day.
When is the rainy season in Leiden?
The rainy (wet) season in Leiden runs from October to March, peaking in December with a 51% chance of rain on a given day. The dry season is April to September; May is the driest month, at 26%.
What time of year is Leiden windiest?
Winds in Leiden are highest in February, averaging 6.4 m/s (23 km/h), and lightest in August, at 4.7 m/s (17 km/h). The prevailing wind is from the SW.
What is the average temperature in Leiden year round?
The average temperature in Leiden over the whole year is 12°C. August is the hottest month, with highs of about 22°C; January is the coldest, with lows of about 4°C.