San Marino, San Marino Climate & Monthly Averages
The climate of San Marino
Located in San Marino, San Marino experiences a humid subtropical climate with hot, humid summers and generally mild winters. Afternoon temperatures peak near 82°F (28°C) in July and dip to about 44°F (6°C) in January, with around 39.8 inches (1010 mm) of precipitation falling across the year.
Climate quick facts
- Hottest month: July - highs near 82°F (28°C)
- Coldest month: January - highs near 44°F (6°C)
- Record high: 98°F (37°C) · Record low: 10°F (-12°C) (2015–2024)
- Wettest month: May (14 rainy days) · Sunniest: July (13.7 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
- Snow: about 7 days a year
Temperatures through the year
The warmest stretch of the year centers on July. Highs average 82°F (28°C) and overnight lows stay near 63°F (17°C). The coolest month is January, with typical highs of 44°F (6°C) and lows around 31°F (-1°C). Based on 2015–2024 weather data, temperatures have reached as high as 98°F (37°C) and dropped as low as 10°F (-12°C).
Rain, sun and snow
May is usually the wettest month. It brings about 5.1 inches (130 mm) of rain over 14 days, while July is the driest. July brings the most sunshine, averaging 13.7 hours of sun a day. Snow falls on about 7 days in a typical year, mostly from December through March.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 44° | 31° | 10 | 3.1 in | 6.1 h/day | 81% |
| February | 48° | 33° | 10 | 3.7 in | 7.3 h/day | 77% |
| March | 51° | 36° | 10 | 3.0 in | 9.0 h/day | 73% |
| April | 58° | 41° | 11 | 2.8 in | 10.6 h/day | 70% |
| May | 65° | 49° | 14 | 5.1 in | 11.2 h/day | 72% |
| June | 76° | 58° | 9 | 2.4 in | 13.1 h/day | 64% |
| July | 82° | 63° | 8 | 1.8 in | 13.7 h/day | 59% |
| August | 80° | 63° | 8 | 2.4 in | 12.3 h/day | 62% |
| September | 71° | 55° | 10 | 3.8 in | 10.3 h/day | 71% |
| October | 63° | 49° | 11 | 4.4 in | 8.1 h/day | 79% |
| November | 53° | 40° | 12 | 4.4 in | 6.0 h/day | 83% |
| December | 47° | 34° | 9 | 2.8 in | 5.9 h/day | 83% |
San Marino month by month
San Marino weather in January
January brings highs around 44°F (6°C), lows near 31°F (-1°C), about 10 wet days and roughly 3 snowy days - typically the coldest month of the year in San Marino.
San Marino weather in February
February brings highs around 48°F (9°C), lows near 33°F (1°C), about 10 wet days and roughly 2 snowy days.
San Marino weather in March
March brings highs around 51°F (11°C), lows near 36°F (2°C), about 10 wet days and roughly 1 snowy days.
San Marino weather in April
April brings highs around 58°F (14°C), lows near 41°F (5°C), about 11 wet days.
San Marino weather in May
May brings highs around 65°F (18°C), lows near 49°F (10°C), about 14 wet days - typically the wettest month of the year in San Marino.
San Marino weather in June
June brings highs around 76°F (24°C), lows near 58°F (14°C), about 9 wet days.
San Marino weather in July
July brings highs around 82°F (28°C), lows near 63°F (17°C), about 8 wet days - typically the hottest month and the driest month and the sunniest month of the year in San Marino.
San Marino weather in August
August brings highs around 80°F (27°C), lows near 63°F (17°C), about 8 wet days.
San Marino weather in September
September brings highs around 71°F (22°C), lows near 55°F (13°C), about 10 wet days.
San Marino weather in October
October brings highs around 63°F (17°C), lows near 49°F (9°C), about 11 wet days.
San Marino weather in November
November brings highs around 53°F (11°C), lows near 40°F (4°C), about 12 wet days.
San Marino weather in December
December brings highs around 47°F (8°C), lows near 34°F (1°C), about 9 wet days and roughly 1 snowy days.
Seasons in San Marino
Spring (March through May)
Spring in San Marino is crisp but comfortable, with daytime highs averaging 58°F (14°C) and nights around 42°F (6°C); expect showers on roughly 36 days across the season.
Summer (June through August)
Summer in San Marino is mild and warm, with daytime highs averaging 79°F (26°C) and nights around 61°F (16°C); expect showers on roughly 25 days across the season.
Fall (September through November)
Fall in San Marino stays on the cool side of mild, with daytime highs averaging 62°F (17°C) and nights around 48°F (9°C); expect showers on roughly 33 days across the season.
Winter (December through February)
Winter in San Marino is chilly, with daytime highs averaging 46°F (8°C) and nights around 33°F (0°C); expect showers on roughly 29 days across the season, plus around 6 snowy days.
Climate questions, answered
What is the average temperature in San Marino?
Is San Marino hot in summer?
Is San Marino cold in winter?
How many rainy days does San Marino get in a year?
Best time to visit San Marino
The best time to visit San Marino is generally June to October, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window typically sit near 74°F (23°C).
Pack for San Marino with a warm jacket and layers for the cooler season; a compact umbrella or rain shell - showers are a regular feature. Evenings can feel noticeably cooler than afternoons - July nights average 63°F (17°C).
San Marino temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.