Best time to visit San Gimignano
Re-score for me — drag the dial — every chart on the page recolours live for your heat limit 27°C
Default 27 °C is the upper edge of the Holiday Climate Index "ideal comfort" band (Scott, Rutty, Amelung & Tang, 2016). Above this, most warm-tourism travellers report measurable discomfort.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
Greyed factors are scored normally — extreme heat overrides them, so a clear sky or low rain can't lift the period.
How is this scored? HCI / Steadman / CCI gate — full methodology and citations below.
Compare with another destination
Add as many as you like — stacked below the main strips above. Each row is just the recent-window score strip and (for beach destinations) sea-temperature strip.
Tours in San Gimignano
6 top-rated tours via Viator. Booking links earn this site a commission at no cost to you. Map locations are approximate (centred on San Gimignano).
- 1
Tuscan Cooking Class - 2
Authentic Pasta Making Class in Chianti Countryside - 3
Tuscan Wine & Bruschetta Tasting for Families in San Gimignano - 4
Superior Wine Tasting in San Gimignano - 5
San Gimignano Sunset Belvedere Dinner and Wine Tasting - 6
Chianti & Montalcino Wine Tour from San Gimignano
Last refreshed 2026-06-08.
Similar climatesSiena98% · Bologna95% · Verona94%
Other destinations with the most-alike year-round climate to San Gimignano (apparent temperature, rain hours, sunshine — matched within the same trip-profile). The ±N chip compares each match's typical score for the current month against San Gimignano's. Based on the 2020-2024 climatology, not this year's actual weather.
Month-by-month
| Month | Temp °C | Feels °C | Rain days | Rain h | Rain h/day | Humidity | Wind km/h | Sun h | UV | Interest | Score |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan | 2–10 | 8 | 8 | 109 | 13.6 | 75% | 16 | 151 | 1 | Quiet | 6 |
| Feb | 3–13 | 11 | 7 | 80 | 11.4 | 68% | 15 | 160 | 2 | Quiet | 7 |
| Mar | 4–15 | 12 | 8 | 90 | 11.3 | 58% | 16 | 211 | 3 | Quiet | 7 |
| Apr | 6–18 | 16 | 10 | 110 | 11.0 | 52% | 17 | 241 | 5 | Quiet | 8 |
| May | 12–23 | 22 | 12 | 123 | 10.3 | 52% | 17 | 265 | 6 | Quiet | 8 |
| Jun | 16–28 | 28 | 8 | 82 | 10.3 | 46% | 16 | 292 | 7 | Quiet | 9 |
| Jul | 19–33 | 33 | 4 | 28 | 7.0 | 37% | 17 | 325 | 8 | Quiet | 5 |
| Aug | 19–32 | 32 | 5 | 48 | 9.6 | 39% | 17 | 285 | 7 | Peak | 5 |
| Sep | 15–26 | 26 | 8 | 93 | 11.6 | 50% | 15 | 235 | 5 | Moderate | 9 |
| Oct | 12–21 | 21 | 9 | 105 | 11.7 | 64% | 15 | 193 | 3 | Quiet | 8 |
| Nov | 7–15 | 13 | 10 | 105 | 10.5 | 71% | 16 | 155 | 2 | Peak | 7 |
| Dec | 4–11 | 9 | 12 | 157 | 13.1 | 77% | 15 | 130 | 1 | Quiet | 5 |
UV Index in San Gimignano by Month
UV index in San Gimignano peaks at 8 (high) in July, dropping to 1 (low) in January. June, July, August have high UV — SPF 30+ and sunglasses recommended.
Best months in detail
September
9/1015–26°C · 8 rain days (93h) · 235 sun hours · 50% humidity · Moderate crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 6 (high)
June
9/1016–28°C · 8 rain days (82h) · 292 sun hours · 46% humidity · Quiet crowd · UV 7 (high) · sunniest 1 in 10 days reach 8 (very high)
May
8/1012–23°C (feels 22°C) · 12 rain days (123h) · 265 sun hours · 52% humidity · Quiet crowd · UV 6 (moderate) · sunniest 1 in 10 days reach 7 (high)
Every month
Show the other 9 months in detail
January
6/102–10°C (feels 8°C) · 8 rain days (109h) · 151 sun hours · 75% humidity · Quiet crowd · UV 1 (low)
February
7/103–13°C (feels 11°C) · 7 rain days (80h) · 160 sun hours · 68% humidity · Quiet crowd · UV 2 (low)
March
7/104–15°C (feels 12°C) · 8 rain days (90h) · 211 sun hours · 58% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)
April
8/106–18°C (feels 16°C) · 10 rain days (110h) · 241 sun hours · 52% humidity · Quiet crowd · UV 5 (moderate) · sunniest 1 in 10 days reach 6 (high)
July
5/1019–33°C · 4 rain days (28h) · 325 sun hours · 37% humidity · Quiet crowd · UV 8 (high) · sunniest 1 in 10 days reach 9 (very high)
August
5/1019–32°C · 5 rain days (48h) · 285 sun hours · 39% humidity · Peak crowd · UV 7 (high) · sunniest 1 in 10 days reach 8 (very high)
October
8/1012–21°C · 9 rain days (105h) · 193 sun hours · 64% humidity · Quiet crowd · UV 3 (low) · sunniest 1 in 10 days reach 4 (moderate)
November
7/107–15°C (feels 13°C) · 10 rain days (105h) · 155 sun hours · 71% humidity · Peak crowd · UV 2 (low)
December
5/104–11°C (feels 9°C) · 12 rain days (157h) · 130 sun hours · 77% humidity · Quiet crowd · UV 1 (low)
Frequently asked questions about visiting San Gimignano
When is the best time to visit San Gimignano?
September is the highest-scoring month (9/10 on the Holiday Climate Index). Typical conditions: 15–26°C (8 rainy days). The top three months by score are September, June, May.
What is the worst time to visit San Gimignano?
December is the lowest-scoring month (5/10). Typical conditions: 4–11°C (12 rainy days).
Is San Gimignano too hot in summer?
2 months (July, August) trip the heat deal-breaker in our scoring: apparent temperature crosses the comfort cap, so even with clear skies and low rain the score is held down. Plan around it if heat tolerance is low.
When are crowds lowest in San Gimignano?
Search-interest seasonality (Google Trends 2021-2025) is lowest in January and peaks in November. Interest tracks both in-trip visitors and lead-time planners, so treat it as a "destination is on people's minds" signal rather than literal arrivals.
Which months in San Gimignano have good weather but fewer tourists?
June (climate 9/10, crowd index 17) and April (climate 8/10, crowd index 0) — shoulder months with above-average climate and below-median search-interest. Often the best value-for-weather trade.
What is the UV index in San Gimignano by month?
UV peaks at 8 (high) in July and is lowest in January at 1 (low). Monthly peak values: Jan 1, Feb 2, Mar 3, Apr 5, May 6, Jun 7, Jul 8, Aug 7, Sep 5, Oct 3, Nov 2, Dec 1.
What is the UV index in San Gimignano in July?
July is the peak UV month in San Gimignano, with a daily-peak UV index of 8 (high). Apply SPF 30+, wear sunglasses, and seek shade during midday hours.
How high can UV get in San Gimignano on the sunniest days?
Most days look like the monthly average, but on the sunniest ~1 in 10 days UV climbs higher than the mean suggests. July is the worst case: typical days average UV 8 (high), but the top 10% of days reach UV 9 (very high) — and even higher. Months where the sunniest days routinely exceed the typical reading: March, April, May, June, July, August, September, October. Plan sun protection for the worst case, not the average.
Is air quality in San Gimignano bad for travelers?
PM2.5 (fine-particle pollution) exceeds the WHO sensitive-group guideline (15 µg/m³) in 5 months: January, February, March, November, December. The worst month is February with a typical-day mean of 14 µg/m³ (moderate); on the worst 10% of days PM2.5 reaches 22 µg/m³ (unhealthy for sensitive) and higher. People with asthma, heart conditions, or sensitive children may want to avoid these months or limit outdoor activity. Source: CAMS via Open-Meteo.