Customer ratings 9 / 10

Since 2005, we have been comparing car hire rates

Always the best deal with our Best Price Guarantee.

EUR (€) (EN)

• Nederlands Avis Siena
• Deutsch Avis Siena
• Español Avis Siena
• Français Avis Italie
• English (US) Avis Siena
• Italiano Avis Siena
• Polski Avis Siena
• Deutsch (CH) Avis Siena

Log in

Avis Siena car rental comparison

supplier_landing_page.search.subscript.city

Pick-up location Enter city or airport code

Pick-up date

Time

Drop-off date

Time

- days

Drop off at a different location?

Driver age: 30 - 65

I live in:

Find cheapest car rental

We compare the offers from those and many more suppliers:

Climate chart Siena

Jan.

max 50°F min 39°F

9

Feb.

max 54°F min 37°F

4

Mar.

max 57°F min 36°F

3

Apr.

max 63°F min 43°F

10

May.

max 81°F min 52°F

11

Jun.

max 95°F min 61°F

1

Jul.

max 102°F min 64°F

1

Aug.

max 95°F min 64°F

14

Sep.

max 79°F min 57°F

16

Oct.

max 75°F min 55°F

4

Nov.

max 59°F min 46°F

10

Dec.

max 48°F min 39°F

20

Weekly overview Siena

Weather Siena 14 days

Thursday 10-09-2026 Light rain 63°F / 79°F

Friday 11-09-2026 Overcast 63°F / 79°F

Saturday 12-09-2026 Sunny/Clear 63°F / 79°F

Sunday 13-09-2026 Sunny/Clear 57°F / 79°F

Monday 14-09-2026 Cloudy 61°F / 77°F

Tuesday 15-09-2026 Sunny/Clear 61°F / 79°F

Wednesday 16-09-2026 Sunny/Clear 59°F / 79°F

Thursday 17-09-2026 Sunny/Clear 64°F / 82°F

Friday 18-09-2026 Overcast 63°F / 75°F

Saturday 19-09-2026 Thundery outbreaks possible 61°F / 77°F

Sunday 20-09-2026 Sunny/Clear 57°F / 77°F

Monday 21-09-2026 Sunny/Clear 59°F / 79°F

Tuesday 22-09-2026 Sunny/Clear 63°F / 81°F

Wednesday 23-09-2026 Sunny/Clear 61°F / 79°F

This is how HAPPYCAR works

We find and compare the best deals

We offer rental cars in more than 40,000 locations

Book a rental car with a comprehensive insurance online rather than overpay on site.

Save up to 60%. Cancellation free of charge up to 48 hours before pick-up.