Haarlem's climate is relatively comfortable in the summer, but the winter months are cold for long periods of time. It is also characterized by many windy days throughout the year. The best season to visit is from June to September.

Haarlem Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Highest Temperature 6 7 10 14 18 20 22 22 19 15 10 7 Lowest Temperature 1 1 3 5 8 11 13 13 11 8 4 2 Precipitation 45 37 34 26 38 41 56 58 52 58 56 51 　London Highest Temperature 6 7 10 13 17 20 22 21 19 14 10 7 Lowest Temperature 2 2 3 5 8 11 13 13 11 8 5 3 Precipitation 53 40 37 38 46 46 56 59 50 57 64 48 Precipitation number of days 17 13 11 14 13 11 13 13 13 14 16 16

Netherlands 　Amsterdam 　Maastricht 　Haarlem	The time difference of Haarlem is UTC+1 UTC+2 for daylight saving time Local time Daylight savings time UTC 0:00 1:00 23:00 1:00 2:00 0:00 2:00 3:00 1:00 3:00 4:00 2:00 4:00 5:00 3:00 5:00 6:00 4:00 6:00 7:00 5:00 7:00 8:00 6:00 8:00 9:00 7:00 9:00 10:00 8:00 10:00 11:00 9:00 11:00 12:00 10:00 12:00 13:00 11:00 13:00 14:00 12:00 14:00 15:00 13:00 15:00 16:00 14:00 16:00 17:00 15:00 17:00 18:00 16:00 18:00 19:00 17:00 19:00 20:00 18:00 20:00 21:00 19:00 21:00 22:00 20:00 22:00 23:00 21:00 23:00 0:00 22:00