Syracuse has a classic Mediterranean climate with hot, dry summers and mild, wetter winters. The city sits on the eastern coast of Sicily facing the Ionian Sea, which moderates temperatures year-round. The average annual temperature is 18.3°C (64.9°F), and total yearly rainfall is around 550mm (21.7 inches), concentrated almost entirely between October and March. Sea temperatures range from 15°C (59°F) in February to 26°C (79°F) in August, making late summer the best time for swimming.
For planning your trip, see the best time to visit Syracuse guide for seasonal recommendations and the Syracuse travel tips for practical logistics.
Syracuse Weather by Month: Temperature and Rainfall
January
January is the coldest month in Syracuse, with average highs of 15°C (59°F) and lows of 7°C (45°F). Rainfall averages 73mm across 10 wet days. Sunshine is limited to about 4 hours per day. Sea temperature drops to 15°C (59°F). Pack a warm jacket for evenings and a raincoat. Snow is extremely rare, occurring perhaps once every 20-30 years.
February
February sees similar temperatures to January, with highs of 15°C (59°F) and lows of 7°C (45°F). Rainfall decreases slightly to around 55mm. You will get about 5 hours of daily sunshine. The sea remains cold at 15°C. This is the lowest point for tourism, so you will find the cheapest accommodation and empty archaeological sites.
March
March brings the first hints of spring, with highs reaching 17°C (63°F) and lows of 8°C (46°F). Rainfall drops to 45mm over 7-8 wet days. Sunshine increases to 6 hours per day. Wildflowers begin appearing in the countryside. The sea is still cool at 15°C. Easter celebrations can bring crowds if the holiday falls in March.
April
April is pleasantly warm with highs of 19°C (66°F) and lows of 10°C (50°F). Rainfall is moderate at 35mm. You will enjoy 7 hours of daily sunshine. The sea begins warming to 16°C (61°F), though still too cool for most swimmers. This is an excellent month for sightseeing: warm enough for shorts during the day, not yet crowded, and the landscape is green from winter rains.
May
May is one of the best months in Syracuse. Highs reach 24°C (75°F) with lows of 13°C (55°F). Rainfall drops sharply to 18mm over just 3-4 wet days. Expect 9 hours of sunshine daily. The sea warms to 19°C (66°F), swimmable for the brave. The Greek Theatre Festival typically begins in mid-May. Book accommodation 2-3 months ahead for May visits.
June
June brings summer heat with highs of 29°C (84°F) and lows of 18°C (64°F). Rainfall is negligible at 6mm, usually zero rainy days. You get 11 hours of sunshine daily. The sea reaches 22°C (72°F), warm enough for comfortable swimming. Humidity remains manageable thanks to sea breezes. Late June begins the peak tourist season, with prices rising and Ortigia filling with visitors.
July
July is the hottest month with highs of 32°C (90°F) and lows of 21°C (70°F). Rainfall is nearly zero at 3mm. Expect 12 hours of daily sunshine, the maximum for the year. The sea peaks at 25°C (77°F). Afternoons can feel oppressive for sightseeing; plan indoor museum visits or beach time between 12:00 and 16:00. The Greek Theatre Festival is in full swing through July. Book everything well in advance.
August
August matches July for heat, with highs of 32°C (90°F) and lows of 21°C (70°F). Rainfall stays minimal at 10mm. The sea reaches its warmest at 26°C (79°F). This is peak Italian holiday season (Ferragosto on August 15), meaning many Italians travel to Sicily. Beaches are packed, restaurant reservations are essential, and hotel prices hit their annual maximum. The humidity can make sightseeing uncomfortable during midday hours.
September
September is nearly perfect. Highs drop to 28°C (82°F) with lows of 19°C (66°F). Rainfall increases slightly to 35mm but typically falls as brief afternoon showers. Sunshine hours remain high at 8 per day. The sea stays warm at 24°C (75°F). Crowds thin after the first week, and prices begin to moderate. This is arguably the best month overall for combining beach time with sightseeing.
October
October sees a shift toward autumn with highs of 24°C (75°F) and lows of 15°C (59°F). Rainfall jumps to 75mm over 8-9 wet days. You will get 6 hours of daily sunshine. The sea remains swimmable at 22°C (72°F) through mid-month. Early October is still pleasant for outdoor activities; by late October, rain becomes more frequent. Pack layers and a rain jacket.
November
November brings cooler, wetter weather. Highs average 19°C (66°F) with lows of 11°C (52°F). Rainfall peaks at 80mm, the second-wettest month. Sunshine drops to 5 hours daily. The sea cools to 19°C (66°F). This is low season, with many beach-focused businesses closing. You will find excellent hotel deals, and the archaeological sites are nearly empty. Bring a raincoat and waterproof shoes.
December
December is the wettest month with 85mm of rainfall across 11-12 wet days. Highs reach 16°C (61°F) with lows of 8°C (46°F). Sunshine is limited to 4 hours. The sea temperature drops to 17°C (63°F). The Feast of Santa Lucia on December 13 brings a surge of visitors for the patron saint celebrations. Christmas markets appear in Ortigia. Pack warm clothing and rain gear.
Syracuse Sea Temperatures by Month
The Ionian Sea off Syracuse is warmest from July through September (24-26°C / 75-79°F), making these months ideal for swimming and water activities. The water remains pleasant through October at 22°C (72°F). The coldest months are January through March at 15°C (59°F), though some hardy locals swim year-round. The sea warms noticeably from late May onward, crossing the 20°C (68°F) threshold that most swimmers find comfortable.
Syracuse Weather Quick Reference Table
| Month | Avg High (°C/°F) | Avg Low (°C/°F) | Rainfall (mm) | Rain Days | Sun Hours | Sea Temp (°C/°F) |
|---|---|---|---|---|---|---|
| Jan | 15 / 59 | 7 / 45 | 73 | 10 | 4 | 15 / 59 |
| Feb | 15 / 59 | 7 / 45 | 55 | 8 | 5 | 15 / 59 |
| Mar | 17 / 63 | 8 / 46 | 45 | 7 | 6 | 15 / 59 |
| Apr | 19 / 66 | 10 / 50 | 35 | 6 | 7 | 16 / 61 |
| May | 24 / 75 | 13 / 55 | 18 | 4 | 9 | 19 / 66 |
| Jun | 29 / 84 | 18 / 64 | 6 | 1 | 11 | 22 / 72 |
| Jul | 32 / 90 | 21 / 70 | 3 | 0 | 12 | 25 / 77 |
| Aug | 32 / 90 | 21 / 70 | 10 | 2 | 11 | 26 / 79 |
| Sep | 28 / 82 | 19 / 66 | 35 | 5 | 8 | 24 / 75 |
| Oct | 24 / 75 | 15 / 59 | 75 | 8 | 6 | 22 / 72 |
| Nov | 19 / 66 | 11 / 52 | 80 | 9 | 5 | 19 / 66 |
| Dec | 16 / 61 | 8 / 46 | 85 | 11 | 4 | 17 / 63 |
