New Haven weather in July 2025

Expect 27°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in New Haven in July. Check more long-term weather averages for New Haven in July before you book your next holiday to Connecticut in 2025/2026.

  • 27°C maximum daytime temperature in July in New Haven27
    27°C max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in July in New Haven9
    9 days with some rainfall
  • 17°C minimum night-time temperature in July in New Haven17
    17°C min night temperature
  • 15 hours of daylight per day in July in New Haven15
    15 hours of daylight per day
  • Moderate heat & humidity in July in New HavenM
    Moderate heat & humidity
  • 84 mm monthly rainfall in July in New Haven84
    84 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in July in New Haven8
    8 (Very High) UV index
  • 21°C sea temperature in July in New Haven21
    21°C sea temperature

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The July 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)

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How hot is it in New Haven in July?

Daytime temperatures usually reach 27°C in New Haven in July with moderate heat and humidity, falling to 17°C at night.

How sunny is it in New Haven in July?

There are normally 9 hours of bright sunshine each day in New Haven in July - that's 61% of daylight hours.

How warm is the sea around New Haven in July?

The average sea temperature around New Haven in July is 21°C.

Does it rain in New Haven in July?

There are usually 9 days with some rain in New Haven in July and the average monthly rainfall is 84mm.

New Haven July sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Tuesday, 1st July 2025 04:22 19:29
Wednesday, 16th July 2025 04:33 19:23
Thursday, 31st July 2025 04:46 19:09

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