Weather by month for central San Marino, the best months to go and how San Marino's regions differ, scored from 10 years of climate data.
Jun, Sep
The highest month scores: comfortable temperatures, little rain and plenty of sun.
Highs 22°C to 25°C · 10–11 rain days
Apr, May, Jul, Aug, Oct
Still good weather, just not quite the top months.
Highs 15°C to 28°C · 7–15 rain days
Jan, Feb, Dec
The weakest weather of the year: too hot, too cold or too wet.
Highs 7°C to 9°C · 10–11 rain days
Weather by month
Average highs and lows, rain days, sunshine and our month score out of 10.
| Month | High / low | Rain days | Sunshine | Score |
|---|---|---|---|---|
| January | 7°C / 1°C | 11 days (81 mm) | 5.9 h/day | 2.4/10 |
| February | 9°C / 2°C | 10 days (96 mm) | 7.0 h/day | 3.3/10 |
| March | 11°C / 3°C | 12 days (86 mm) | 8.8 h/day | 4.2/10 |
| April | 15°C / 6°C | 12 days (76 mm) | 10.5 h/day | 6.0/10 |
| May | 19°C / 10°C | 15 days (121 mm) | 11.1 h/day | 7.1/10 |
| Best month: June | 25°C / 15°C | 10 days (65 mm) | 13.1 h/day | 8.0/10 |
| July | 28°C / 18°C | 7 days (46 mm) | 13.7 h/day | 7.4/10 |
| August | 28°C / 18°C | 9 days (59 mm) | 12.4 h/day | 7.4/10 |
| Best month: September | 22°C / 13°C | 11 days (85 mm) | 10.4 h/day | 7.9/10 |
| October | 18°C / 10°C | 12 days (111 mm) | 8.0 h/day | 7.4/10 |
| November | 12°C / 5°C | 13 days (114 mm) | 6.0 h/day | 4.0/10 |
| December | 9°C / 2°C | 10 days (76 mm) | 5.7 h/day | 2.8/10 |
Figures for central San Marino; the country's best months are weighted across its cities. Best months are highlighted. How we score months
Month by month
7°C / 1°C · 11 rain days · 5.9 h sun
Days top out at 6.9°C with lows near 0.5°C, and rain falls on about 11 days. Sun hours are the lowest of the year at 5.9. With a score of 2.4, this is a tough, cold, grey month. New Year's Day and Epiphany fall here, but weather isn't on your side.
9°C / 2°C · 10 rain days · 7.0 h sun
Highs reach 9.1°C and rain still shows up on roughly 10 days. Sun hours improve slightly to 7, but at a score of 3.3 this remains a weak month for a visit. The Feast of Saint Agatha falls on 5 February.
11°C / 3°C · 12 rain days · 8.8 h sun
Temperatures climb to an 11.1°C high, though rain days rise to 11.5. Sun hours reach 8.8, pushing the score up to 4.2, an okay but unremarkable month. The Anniversary of the Arengo is marked on 25 March.
15°C / 6°C · 12 rain days · 10.5 h sun
Highs reach 14.8°C with lows around 5.9°C. Rain falls on about 12 days but sun hours jump to 10.5. The score hits 6, a good month, and Easter weekend lands here in 2026.
19°C / 10°C · 15 rain days · 11.1 h sun
Highs reach 18.6°C, but May is the wettest month with 121mm of rain spread over nearly 15 days. Sun hours are strong at 11.1, and the score of 7.1 still marks it as good. Labour Day falls on 1 May.
25°C / 15°C · 10 rain days · 13.1 h sun
This is the best-scoring month at 8, with highs of 24.5°C and lows near 14.9°C. Rain drops to about 10 days and sun hours climb to 13.1. Corpus Christi falls on 4 June.
28°C / 18°C · 7 rain days · 13.7 h sun
Highs reach a warm 28.3°C with lows of 17.7°C, and rain is scarce at just 7.3 days and 46mm. Sun hours peak at 13.7, keeping the score at a good 7.4. Liberation from Fascism is marked on 28 July.
28°C / 18°C · 9 rain days · 12.4 h sun
Highs stay high at 27.6°C with lows of 17.6°C, and rain days hold near 9. Sun hours remain strong at 12.4, giving a good score of 7.4. Ferragosto on 15 August is a major public holiday.
22°C / 13°C · 11 rain days · 10.4 h sun
Highs ease to 22.1°C and rain days sit around 10.5. Sun hours are still solid at 10.4, and the score of 7.9 makes this one of the two best months. The Feast of San Marino and the Republic is celebrated on 3 September.
18°C / 10°C · 12 rain days · 8.0 h sun
Highs drop to 17.5°C and rain picks up to 111mm over about 12 days. Sun hours fall to 8, but the score of 7.4 still keeps it in the good range, thanks to mild temperatures.
12°C / 5°C · 13 rain days · 6.0 h sun
Highs reach only 11.9°C and rain is frequent, falling on about 12.5 days with 114mm total. Sun hours drop to 6, giving a weak score of 4. All Saints' Day on 1 November and the war commemoration on 2 November fall here.
9°C / 2°C · 10 rain days · 5.7 h sun
Highs reach just 8.7°C with lows near 2.1°C, and sun hours are low at 5.7. With a score of 2.8, this is a cold, dim month, though Christmas, St. Stephen's Day and New Year's Eve bring a festive atmosphere despite the weather.
By trip type
City sightseeing
June and September are the best months for exploring San Marino's old town. June has highs around 24.5°C with 13.1 hours of sun, while September cools to 22.1°C with 10.4 hours of sun and fewer crowds than peak summer. Both months keep rain days near 10, so walking the streets stays comfortable.
Hiking & nature
September suits hiking well, with daytime highs of 22.1°C and lows of 13.4°C, mild enough for climbing without summer's heat. Rainfall sits at 85mm over 10.5 days, so trails are usually dry between showers.
Events calendar
Public holidays: New Year's Day (1 Jan), Epiphany (6 Jan)
Public holidays: Feast of Saint Agatha (5 Feb)
Public holidays: Anniversary of the Arengo (25 Mar)
Public holidays: Easter Sunday (5 Apr), Easter Monday (6 Apr)
Public holidays: Labour Day (1 May)
Public holidays: Corpus Christi (4 Jun)
Public holidays: Liberation from Fascism (28 Jul)
Public holidays: Ferragosto (Assumption) (15 Aug)
Public holidays: The Feast of San Marino and the Republic (3 Sep)
Public holidays: All Saints' Day (1 Nov), Commemoration of all those who died at war (2 Nov)
Public holidays: Immaculate Conception (8 Dec), Christmas Eve (24 Dec), Christmas Day (25 Dec), St. Stephen's Day (26 Dec), New Year's Eve (31 Dec)
Keep planning
FAQ
Yes, June is one of the two best months to visit. Daytime highs reach 24.5°C and lows sit around 14.9°C, with only 10.1 rain days and 65mm of rain. Sun hours climb to 13.1 a day, making it warm and mostly dry.
Yes, August is rated good. Highs average 27.6°C and lows 17.6°C, so it's the warmest stretch of the year. Rain is light, with 9 rain days and 59mm total, and you get 12.4 hours of sun a day.
September scores highest alongside June, both rated best. In September, highs average 22.1°C and lows 13.4°C, with 10.5 rain days and 85mm of rain. It combines warm weather with fewer crowds than peak summer.
January is rated as a month to avoid for ideal conditions, with the lowest score of the year at 2.4. Highs only reach 6.9°C and lows drop to 0.5°C, while 10.6 rain days bring 81mm of rain and sun hours fall to 5.9, the gloomiest stretch of the year.
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