Jamestown weather in May 2026

Q: How hot is it in Jamestown in May?

Daytime temperatures usually reach 21°C in Jamestown in May, falling to 12°C at night.

Q: How sunny is it in Jamestown in May?

There are normally 8 hours of bright sunshine each day in Jamestown in May - that's 57% of daylight hours.

Q: How warm is the sea around Jamestown in May?

The average sea temperature around Jamestown in May is 12°C.

Q: Does it rain in Jamestown in May?

There are usually 11 days with some rain in Jamestown in May and the average monthly rainfall is 103mm.

Expect daytime maximum temperatures of 66°F in Jamestown, New York in May based on long-term weather averages. There are 8 hours of sunshine per day on average with 13 days with some rainfall and typically 3.8 inches of rainfall in the month.

66
66°F max day temperature
8
8 hours of sunshine per day
13
13 days with some rainfall
43
43°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
3.8
3.8 inches of monthly rainfall
7
7 (High) UV index

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The May weather guide for New York (Jamestown) 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) | Imperial (°F)