New Haven weather in October 2025

Expect 18°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in New Haven in October. Check more long-term weather averages for New Haven in October before you book your next holiday to Connecticut in 2025/2026.

  • 18°C maximum daytime temperature in October in New Haven18
    18°C max day temperature
  • 7 hours of sunshine per day
  • 7 days with some rainfall in October in New Haven7
    7 days with some rainfall
  • 7°C minimum night-time temperature in October in New Haven7
    7°C min night temperature
  • 11 hours of daylight per day in October in New Haven11
    11 hours of daylight per day
  • No heat & humidity in October in New Haven0
    No heat & humidity
  • 87 mm monthly rainfall in October in New Haven87
    87 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in October in New Haven4
    4 (Moderate) UV index
  • 17°C sea temperature in October in New Haven17
    17°C sea temperature

More about New Haven

New Haven by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Connecticut

Travel Up: up to £15 off flight & hotel bookings

  • Save up to £15 on flights & hotels with Travel Up
  • Offer only valid on bookings of £300 or more
  • Use discount code at check out for offer to apply
Show discount codeShow discount code ******S15
Redeem Travel Up discount code >>

Expires at 23:59 on Saturday 30th Nov 2024 · View all Travel Up offers

The October weather guide for Connecticut (New Haven) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

Back to top

More about the USA

How hot is it in New Haven in October?

Daytime temperatures usually reach 18°C in New Haven in October, falling to 7°C at night.

How sunny is it in New Haven in October?

There are normally 7 hours of bright sunshine each day in New Haven in October - that's 61% of daylight hours.

How warm is the sea around New Haven in October?

The average sea temperature around New Haven in October is 17°C.

Does it rain in New Haven in October?

There are usually 7 days with some rain in New Haven in October and the average monthly rainfall is 87mm.

New Haven October sunrise & sunset times

Browse the sunrise and sunset times for New Haven in October 2025. Select a month to view New Haven sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st October 2025 05:49 17:33
Thursday, 16th October 2025 06:05 17:09
Friday, 31st October 2025 06:22 16:48

Related posts

Popular travel offers

Explore holidays in the sun for less

More holidays

Airport parking

More parking

Airport lounges

More lounges

Top ^