Late spring · Weather & things to do
Siena in May
Siena warms up: highs climb to 72°F (22°C), from 64°F in April, with lows of 51°F (10°C) and about 2.3 in (58 mm) of rain.
At 87/100 for comfort (3rd of 12), it's one of the best months to visit.
- Avg high
- 72°F (22°C)
- Avg low
- 51°F (10°C)
- Rain
- 2.3 in (58 mm)
- Humidity
- 71%
- Cloud cover
- 62%
- Daylight
- ~14 h 30 min
- Comfort score
- 87/100 · Great
What May feels like
Highs settle around 72°F (22°C), warm enough for short sleeves most of the day.
After dark, temperatures fall to about 51°F (10°C).
Rain is moderate at about 2.3 in (58 mm) for the month.
Plan around May
May is one of Siena's best months on the climate data.
- First warm month: highs reach 72°F, up from 64°F in April.
- Comfort holds steady from April (86 → 87/100).
- May sits inside the Apr – Jun, Sep – Oct window our Tuscany Hill Towns route recommends.
What to pack for May
- Light, breathable clothes72°F afternoons
- Sunscreen, sunglasses and a hathigh UV on clear days
- Comfortable walking shoesmost places below are best reached on foot or with short walks
What to do in Siena in May
May is good outdoor weather here, so these picks lean toward the open air.
Piazza del Campo
Shell-shaped square where the Palio horse race runs in July and August.
Why now May scores 87/100 for comfort, good conditions for being outside.
Torre del Mangia
Tall tower above Palazzo Pubblico with views of Siena's rooftops.
Museo Civico
Palazzo Pubblico's frescoed halls, including Lorenzetti's Good and Bad Government.
Antica Osteria Da Divo
Restaurant with tables in Etruscan caves beneath the city.
Osteria Le Logge
Old pharmacy turned restaurant serving refined Tuscan food.
Nearby in May
- Chianti in May~18 mi · highs 73°F, 2.3 in rain · similar daytime temperatures, about as wet
- Val d'Orcia in May~24 mi · highs 70°F, 2.6 in rain · similar daytime temperatures, about as wet
- Florence in May~31 mi · highs 74°F, 2.5 in rain · 1°C (2°F) warmer by day, about as wet
- Piran in May~188 mi · highs 71°F, 3.5 in rain · similar daytime temperatures, wetter
NASA POWER 2001–2025 monthly averages on a ~50 km grid. Comfort scores weigh temperature, rain, humidity and cloud: see how we score each month. Check a forecast before you go.
Siena in May: quick answers
Is May a good time to visit Siena?
Yes. On the climate data it's one of the best months, scoring 87/100. Expect highs of 72°F (22°C) and 2.3 in (58 mm) of rain. May is inside the Apr – Jun, Sep – Oct window our Tuscany Hill Towns route recommends.
How hot is Siena in May?
Average highs are 72°F (22°C) and average lows 51°F (10°C), making it the 5th-warmest month by daytime highs.
Does it rain a lot in Siena in May?
Not much: about 2.3 in (58 mm) of rain falls across May on average, the 5th-driest month of the year. The annual total is about 28.6 in (727 mm).
What should I pack for Siena in May?
Bring light, breathable clothes (72°F afternoons), sunscreen, sunglasses and a hat (high UV on clear days) and comfortable walking shoes (most places below are best reached on foot or with short walks).
Routes in season in May
- Tuscany Hill Towns Apr – Jun, Sep – Oct
Planning Siena in May?
Bring the crew into one shared trip: vote on dates, build the day-by-day plan, split costs and share one packing list.