| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 6.2° | 1.3° | 75.4mm | 18.2 | 25 |
| February | 7° | 1.3° | 65.4mm | 14.6 | 28 |
| March | 9.7° | 2.3° | 50.1mm | 12.7 | 42 |
| April | 13.7° | 4.1° | 46.3mm | 10.9 | 58 |
| May | 17.4° | 7.8° | 54.3mm | 11.9 | 68 |
| June | 20.2° | 10.8° | 56.9mm | 11.5 | 77 |
| July | 22° | 12.9° | 75.9mm | 13 | 74 |
| August | 22° | 12.9° | 95.7mm | 13.6 | 73 |
| September | 19.3° | 10.7° | 81.8mm | 13.4 | 71 |
| October | 14.8° | 7.9° | 94.8mm | 15.9 | 53 |
| November | 10.2° | 4.6° | 91.5mm | 18.2 | 39 |
| December | 7.1° | 2.2° | 87.4mm | 18.3 | 29 |
January in Purmerend averages a daily high of 6.2°C with nights around 1.3°C. Expect roughly 18.2 wet days totalling 75.4mm. A hard month to visit for comfort alone.
February in Purmerend averages a daily high of 7°C with nights around 1.3°C. Expect roughly 14.6 wet days totalling 65.4mm. A hard month to visit for comfort alone.
March in Purmerend averages a daily high of 9.7°C with nights around 2.3°C. Expect roughly 12.7 wet days totalling 50.1mm. Demanding conditions — pack for it and plan indoor options.
April in Purmerend averages a daily high of 13.7°C with nights around 4.1°C. Expect roughly 10.9 wet days totalling 46.3mm. Generally workable, with some weather to plan around.
May in Purmerend averages a daily high of 17.4°C with nights around 7.8°C. Expect roughly 11.9 wet days totalling 54.3mm. Generally workable, with some weather to plan around.
June in Purmerend averages a daily high of 20.2°C with nights around 10.8°C. Expect roughly 11.5 wet days totalling 56.9mm. Comfortable conditions for being outdoors all day.
July in Purmerend averages a daily high of 22°C with nights around 12.9°C. Expect roughly 13 wet days totalling 75.9mm. Generally workable, with some weather to plan around.
August in Purmerend averages a daily high of 22°C with nights around 12.9°C. Expect roughly 13.6 wet days totalling 95.7mm. Generally workable, with some weather to plan around.
September in Purmerend averages a daily high of 19.3°C with nights around 10.7°C. Expect roughly 13.4 wet days totalling 81.8mm. Generally workable, with some weather to plan around.
October in Purmerend averages a daily high of 14.8°C with nights around 7.9°C. Expect roughly 15.9 wet days totalling 94.8mm. Demanding conditions — pack for it and plan indoor options.
November in Purmerend averages a daily high of 10.2°C with nights around 4.6°C. Expect roughly 18.2 wet days totalling 91.5mm. Demanding conditions — pack for it and plan indoor options.
December in Purmerend averages a daily high of 7.1°C with nights around 2.2°C. Expect roughly 18.3 wet days totalling 87.4mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Purmerend peaks at 77.
Based on 30 years of records, June–September scores highest for comfort in Purmerend, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 22°C.
August is the wettest, averaging 95.7mm of rain across roughly 13.6 wet days.
January is the coolest month, with average daily highs around 6.2°C.