Giallo Temporali Allerta
Sono previsti fenomeni meteorologici di moderata intensità
(DISCLAIMER: "Le informazioni fornite su METEOALARM per l'Italia riguardano esclusivamente l'intensità e la ricorrenza dei fenomeni, maggiori dettagli sono disponibili su www.meteoam.it. Le informazioni METEOALARM non fo…
Giallo Temporali Allerta
Sono previsti fenomeni meteorologici di moderata intensità
(DISCLAIMER: "Le informazioni fornite su METEOALARM per l'Italia riguardano esclusivamente l'intensità e la ricorrenza dei fenomeni, maggiori dettagli sono disponibili su www.meteoam.it. Le informazioni METEOALARM non fo…
Giallo Temporali Allerta
Sono previsti fenomeni meteorologici di moderata intensità
(DISCLAIMER: "Le informazioni fornite su METEOALARM per l'Italia riguardano esclusivamente l'intensità e la ricorrenza dei fenomeni, maggiori dettagli sono disponibili su www.meteoam.it. Le informazioni METEOALARM non fo…
San Marino weather tomorrow (Wednesday, September 16)
Tomorrow in San Marino looks
sunny, with a high of 81°
and an overnight low of 64°.
Rain is unlikely (3% chance).
Winds top out near 12 mph,
and the UV index reaches 6 (moderate).
San Marino runs on a dry-summer rhythm: the warmest months are also the driest. July averages 1.8 inches (46 mm) while the wet season peaks in May at 5.1 inches (130 mm). Highs range from 44°F (6°C) to 82°F (28°C).
San Marino weather: quick facts
Hottest month: July - highs near 82°F (28°C)
Coldest month: January - highs near 44°F (6°C)
Decade extremes (2015-2024): 98°F (37°C) high · 10°F (-12°C) low
Wettest month: May (14 rainy days) · Sunniest: July (13.7 h sun/day)
Climate type:humid subtropical
Annual swing: 20°C between the average warmest and coolest month · day to night: 8°C
Snow: about 7 days a year
Months with freezing average lows: 1
Average humidity: 73%
Temperatures through the year
January is the coolest month, with highs of 44°F (6°C) and lows near 31°F (-1°C). At its warmest, in July, San Marino runs to 82°F (28°C) in the afternoon and back to 63°F (17°C) by dawn. Precipitation concentrates in May - 5.1 inches (130 mm) on 14 days - and thins out by July.
Rain, sun and snow
Average lows drop to freezing in one month of the year, January. July is the brightest month at 13.7 hours of sun a day, against an annual average of 9.5. Three of the twelve months pair mild highs with fewer than twelve wet days; the longest unbroken run is August through September. Snow falls on roughly 7 days a year, mostly December through March. Across the gridded 2015-2024 daily record, the highest daily maximum for this location was 98°F (37°C) and the lowest daily minimum 10°F (-12°C).
Season by season
Spring (March through May)
Through spring, San Marino is mild: 58°F (14°C) by day, 42°F (6°C) after dark, and rain falls on around 36 of the 90 days. Daylight is generous - around 10.3 hours of sun a day.
Summer (June through August)
Summer in San Marino brings comfortable warmth, with daytime highs averaging 79°F (26°C) and nights around 61°F (16°C); expect showers on roughly 25 days across the season. Daylight is generous - around 13.0 hours of sun a day.
Fall (September through November)
Fall in San Marino is crisp but comfortable, with daytime highs averaging 62°F (17°C) and nights around 48°F (9°C); rain falls on around 33 of the 90 days.
Winter (December through February)
Winter stays firmly cold here - highs near 46°F (8°C), nights near 33°F (0°C), and expect showers on roughly 29 days across the season, plus about 6 snowy days.
Average temperatures in San Marino by month
Monthly averages for San Marino based on 2015–2024 weather data.
January, with highs of 44°F (6°C) and lows near 31°F (-1°C). The coldest day in the 2015-2024 record fell to 10°F (-12°C).
When does it rain most in San Marino?
May, at 5.1 inches (130 mm) over about 14 days. July is the driest month, at 1.8 inches (46 mm).
How humid does San Marino get?
Relative humidity averages 73% across the year, which reads as fairly humid. The most comfortable stretch falls in the drier half of the year.
When should I visit San Marino?
Aim for June to October if you get the choice: the dry season is running but the afternoons are still bearable, and highs average 74°F (23°C) against roughly 9 wet days a month. For the same question asked the other way round, see where else is warm in June.
What is the hottest month in San Marino?
July, averaging 82°F (28°C) by day and 63°F (17°C) overnight. The hottest single day in our 2015-2024 record for this location reached 98°F (37°C).
Is there snow in San Marino?
Yes - about 7 days a year carry measurable snowfall, concentrated December through March.