April-May (spring) for tulips and King's Day; September-October (early autumn) for mild weather with far fewer crowds. April-May: tulip season peaks, King's Day (Apr 27) is unmissable, temperatures 55-68°F. September-October: avg highs ~68°F dropping to ~55°F, significantly fewer tourists, lower hotel prices, museums accessible without queues — the 'sweet spot' per most travel authorities. High summer (July-August) is warmest but most crowded and expensive
| Month | High (°F) | Low (°F) | Notes |
|---|---|---|---|
| Jan | 43 | 36 | crisp & changeable |
| Feb | 44 | 35 | crisp & changeable |
| Mar | 49 | 37 | cool & changeable |
| Apr | 56 | 42 | cool & changeable |
| May | 62 | 48 | mild & changeable |
| Jun | 67 | 54 | mild & changeable |
| Jul | 70 | 58 | mild & changeable |
| Aug | 70 | 58 | mild & changeable |
| Sep | 66 | 54 | mild & changeable |
| Oct | 58 | 49 | cool & changeable |
| Nov | 50 | 42 | cool & changeable |
| Dec | 44 | 37 | crisp & changeable |