Temperature
Pleasant by day, mild at night.
Warm coastal days and plenty of sun.

Pleasant by day, mild at night.
Several rainy days. About 10 wet days, fewer than in most months.
Plenty of sun this month.
In September, afternoons feel about 77° and nights feel near 67°.
Partly cloudy skies this month.
Calm winds are typical in September.
September late afternoons are around 76°F, easing to about 73°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 52 | 42 | 5.0 | 12 | 6.7 | 78 | 57 |
| Feb | 54 | 42 | 4.4 | 11 | 7.9 | 75 | 56 |
| Mar | 59 | 47 | 4.6 | 11 | 9.4 | 73 | 57 |
| Apr | 64 | 52 | 4.4 | 12 | 11.0 | 74 | 59 |
| May | 71 | 58 | 4.1 | 12 | 12.4 | 77 | 64 |
| Jun | 78 | 65 | 2.6 | 9 | 13.7 | 77 | 71 |
| Jul | 83 | 69 | 1.6 | 7 | 14.1 | 74 | 76 |
| Aug | 84 | 70 | 2.4 | 8 | 12.5 | 74 | 77 |
| Sep | 77 | 63 | 4.4 | 10 | 10.7 | 77 | 74 |
| Oct | 69 | 58 | 7.6 | 13 | 8.3 | 82 | 69 |
| Nov | 60 | 50 | 7.7 | 14 | 6.7 | 81 | 64 |
| Dec | 54 | 44 | 5.9 | 13 | 6.0 | 79 | 59 |
Similar climates
Want a side-by-side climate view? Compare Monterosso al Mare with Alghero.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 24, 2026
Data & methodology