Bewolking — 2026
| Maand | Voorschoten | Leidschendam-Voorburg | Verschil |
|---|---|---|---|
| Jan | – | 80.3 % | – |
| Feb | – | 80.7 % | – |
| Mrt | 54.1 % | 55.2 % | -1.1 |
| Apr | 78.7 % | 78.9 % | -0.2 |
| Mei | 58.6 % | 58.6 % | +0.0 |
| Jun | 61 % | 61 % | +0.0 |
| Jul | 53 % | 52.8 % | +0.2 |
| Aug |
| – |
| – |
| – |
| Sep | – | – | – |
| Okt | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |