Zonneschijn — 2020
| Month | Barendrecht | Rotterdam | Difference |
|---|---|---|---|
| Jan | 144.7 uren | 146.1 uren | -1.4 |
| Feb | 184.4 uren | 184.5 uren | -0.1 |
| Mar | 299.1 uren | 301.5 uren | -2.4 |
| Apr | 367.1 uren | 367.1 uren | +0.0 |
| May | 428.9 uren | 429.8 uren | -0.9 |
| Jun | 419.8 uren | 422.6 uren | -2.8 |
| Jul | 415.3 uren | 418.4 uren | -3.1 |
| Aug | – | – | – |
| Sep | – | – | – |
| Oct | – | – | – |
| Nov | – | – | – |
| Dec | – | – | – |