Zagreb vs Rijeka(Omišalj): which is sunnier?
🇭🇷 Croatia vs 🇭🇷 Croatia · 131 km apart · long-term climate normals (NASA POWER, 2001–2020)
Zagreb and Rijeka(Omišalj) are virtually tied for annual sunshine — about 2,018 vs 2,004 hours a year. Rijeka(Omišalj) has the higher Sunshine Score in 7 of 12 months, Zagreb in 1 (4 within 2 points).
Scores are the 0–100 Sunshine Score — sunshine, daytime warmth and dryness in one number, per month.


At a glance
| Zagreb | Rijeka(Omišalj) | |
|---|---|---|
| Sunshine hours / year | 2,018 | 2,004 |
| Sunniest month | July (76/100) | July (81/100) |
| Nov–Feb average score | 5/100 | 13/100 |
| Jun–Aug average score | 75/100 | 79/100 |
| Rain / year | 1,010 mm | 1,089 mm |
| Peak midday UV | 7 (high) | 6 (high) |
Zagreb vs Rijeka(Omišalj) month by month
| Month | Sunshine Score | Day high °C | Rain mm | |||
|---|---|---|---|---|---|---|
| Zagreb | Rijeka(Omišalj) | Zagreb | Rijeka(Omišalj) | Zagreb | Rijeka(Omišalj) | |
| January | 0 | 0 | 4° | 8° | 66 | 86 |
| February | 0 | 6 | 6° | 9° | 73 | 93 |
| March | 19 | 25 | 11° | 12° | 69 | 77 |
| April | 58 | 51 | 17° | 16° | 74 | 72 |
| May | 72 | 74 | 22° | 20° | 100 | 88 |
| June | 74 | 78 | 26° | 24° | 90 | 66 |
| July | 76 | 81 | 30° | 27° | 78 | 51 |
| August | 75 | 77 | 30° | 27° | 84 | 72 |
| September | 69 | 68 | 23° | 23° | 116 | 122 |
| October | 55 | 58 | 17° | 18° | 92 | 114 |
| November | 18 | 32 | 11° | 14° | 94 | 140 |
| December | 0 | 12 | 5° | 10° | 74 | 108 |
The sunnier month by month: Jan even · Feb Rijeka(Omišalj) · Mar Rijeka(Omišalj) · Apr Zagreb · May even · Jun Rijeka(Omišalj) · Jul Rijeka(Omišalj) · Aug even · Sep even · Oct Rijeka(Omišalj) · Nov Rijeka(Omišalj) · Dec Rijeka(Omišalj).
When to pick which
- November–February: Rijeka(Omišalj) (average score 13/100 vs 5). Rijeka(Omišalj) is the warmer, around 10°C daytime highs vs 7°C. See the winter sun ranking.
- March–May: too close to call — Zagreb averages 50/100, Rijeka(Omišalj) 50/100. Daytime highs are similar (17°C vs 16°C).
- June–August: Rijeka(Omišalj) (average score 79/100 vs 75). Zagreb is the warmer, around 29°C daytime highs vs 26°C.
- September–October: too close to call — Zagreb averages 62/100, Rijeka(Omišalj) 63/100. Daytime highs are similar (20°C vs 21°C).
Full month-by-month guides: Zagreb weather by month · Rijeka(Omišalj) weather by month · Best time to visit Croatia.
More comparisons: Zagreb vs Ljubljana · Zagreb vs Graz · Zagreb vs Banja Luka · Rijeka(Omišalj) vs Ljubljana · Rijeka(Omišalj) vs Trieste · Rijeka(Omišalj) vs Zadar · all head-to-heads