Syros weather by month & the best time to visit
🇬🇷 Greece · beach resort · Mediterranean climate
The best time to visit Syros is July — its sunniest month (Sunshine Score 95/100), with August and June close behind. Syros averages about 2,874 hours of sunshine a year. Daytime highs around 26°C / 79°F and roughly 5 mm of rain in July.
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- Sun hours / year
- 2,874
- Sunniest month
- July
- Peak score
- 95/100
- Rain / year
- 534 mm
- Midday UV at peak
- 9 (very high)
- Sea at warmest
- 26°C / 79°F
- Population
- 22k
- Elevation
- 69 m
When is the best time to visit Syros?
For sunshine, the best time to visit Syros is July, then August and June. The dullest month is January (32/100, 99 mm of rain). The full month-by-month picture is in the table below.
How sunny is Syros?
Syros gets a lot of sun: around 2,874 hours a year. 63 Sunshine Score points separate July (95) from January (32), so the month you pick matters. It ranks #23 of 40 destinations in Greece for annual sunshine, below the national median of 2,896 hours. Rain has a clear season: the wettest stretch, around January, carries about 50% of the annual 534 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV | Sea |
|---|---|---|---|---|---|---|
| January | 32 | 13° / 55°F | 11° / 52°F | 99 mm | 2 | 16° / 61°F |
| February | 34 | 13° / 55°F | 11° / 52°F | 78 mm | 3 | 16° / 61°F |
| March | 51 | 15° / 59°F | 13° / 55°F | 51 mm | 4 | 17° / 63°F |
| April | 61 | 16° / 61°F | 14° / 57°F | 27 mm | 6 | 17° / 63°F |
| May | 92 | 20° / 68°F | 18° / 64°F | 20 mm | 7 | 19° / 66°F |
| June | 94 | 24° / 75°F | 22° / 72°F | 9 mm | 9 | 23° / 73°F |
| July | 95 | 26° / 79°F | 24° / 75°F | 5 mm | 9 | 25° / 77°F |
| August | 95 | 26° / 79°F | 24° / 75°F | 4 mm | 8 | 26° / 79°F |
| September | 92 | 24° / 75°F | 22° / 72°F | 24 mm | 7 | 25° / 77°F |
| October | 86 | 21° / 70°F | 19° / 66°F | 53 mm | 4 | 23° / 73°F |
| November | 69 | 18° / 64°F | 16° / 61°F | 73 mm | 2 | 20° / 68°F |
| December | 46 | 15° / 59°F | 13° / 55°F | 91 mm | 1 | 18° / 64°F |
Sea temperature in Syros by month
The sea off Syros is warmest in August at around 26°C / 79°F, and coolest in January at 16°C / 61°F. The water sits at a comfortable 21°C or warmer roughly 5 months a year. Month-by-month sea-surface temperatures are in the Sea column of the table above.
See Syros on the interactive sunshine globe →
Nearby places for sunshine
- Mykonos Greece · 35 km · best in Jul · 2,897 h sun/yr
- Athens Greece · 105 km · best in Aug · 2,907 h sun/yr
- Santorini Greece · 123 km · best in Jun · 3,012 h sun/yr
- Samos Greece · 175 km · best in Jul · 3,081 h sun/yr
- Kos Greece · 202 km · best in Jul · 3,218 h sun/yr
- Izmir Türkiye · 216 km · best in Jun · 2,998 h sun/yr
Nearest destinations
- Paros Greece · 47 km · 2,895 h sun/yr · best in Jul
- Naxos Greece · 53 km · 2,896 h sun/yr · best in Jul
- Milos Greece · 91 km · 3,031 h sun/yr · best in Jul
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