Monthly climate guide
Grosseto weather in May
May in Grosseto is typically warm, with average daytime highs around 23°C (73°F) and night-time lows near 11°C (52°F). The month usually brings about 56 mm of rain (some rain) and is a mix of sun and cloud. Daytime highs are 3°C warmer than April and 6°C cooler than June.
What stands out in May
- Evenings cool off sharply: the daily range is around 12°C, so pack a layer.
- Grosseto is usually about 2°C warmer than Cortona, 90 km away, in May.
- Temperatures are climbing — June is around 6°C warmer.
- Seasonally, May counts as late spring in Grosseto.
Avg high
23°C
73°F
Avg low
11°C
52°F
Rainfall
56 mm
some rain
Humidity
70%
relative
Sky
54%
cloud · a mix of sun and cloud
Grosseto weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 10°C / 51°F | 2°C / 36°F | 52 mm | 86% | 68% |
| February | 11°C / 53°F | 3°C / 37°F | 68 mm | 83% | 65% |
| March | 15°C / 59°F | 5°C / 40°F | 68 mm | 78% | 58% |
| April | 19°C / 66°F | 8°C / 46°F | 48 mm | 73% | 56% |
| May | 23°C / 73°F | 11°C / 52°F | 56 mm | 70% | 54% |
| June | 28°C / 83°F | 16°C / 60°F | 32 mm | 63% | 35% |
| July | 32°C / 89°F | 19°C / 65°F | 35 mm | 58% | 24% |
| August | 32°C / 90°F | 19°C / 66°F | 28 mm | 57% | 23% |
| September | 27°C / 81°F | 15°C / 59°F | 58 mm | 67% | 44% |
| October | 22°C / 71°F | 11°C / 52°F | 80 mm | 77% | 54% |
| November | 16°C / 60°F | 8°C / 46°F | 104 mm | 85% | 65% |
| December | 12°C / 53°F | 4°C / 38°F | 58 mm | 87% | 63% |
What to pack for May
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- An extra layer — evenings are noticeably cooler than afternoons
- A small travel umbrella, just in case
Is May a good time to visit Grosseto?
Compare the months in the chart above to find your ideal window.
Best time to visit Grosseto →Other Italy cities in May
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Grosseto weather in May. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/italy/grosseto/may
<a href="https://weathercompare.eu/weather/italy/grosseto/may">Grosseto weather in May</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/italy/grosseto" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Grosseto weather in May"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/italy/grosseto/may">Grosseto weather in May</a> – WeatherCompare</p>
Grosseto in May: quick answers
Is May a good time to visit Grosseto?
May is a reasonable time for Grosseto: highs around 23°C and about 56 mm of rain, though not one of the three best months.
How warm is Grosseto in May?
Average highs are about 23°C (73°F) and average lows about 11°C (52°F), based on 10 years of daily data.
Does it rain a lot in Grosseto in May?
Grosseto typically gets around 56 mm of rain in May — some rain.
Figures are long-term averages for the area around Grosseto (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.