Nantucket weather in October
Temperature, sea and sunshine in October: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in October
Poor
Best time to visit: July – August
What is the weather like in Nantucket in October?
In October, Nantucket is cool: daytime highs average 15 °C, and nights cool down to about 13 °C. The sea averages 15.3 °C – swimming is only for the hardy. Expect around 6 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 131 mm in total. It is often windy, with gusts of around 37 km/h. All in all, October is not an ideal month for a holiday in Nantucket.
October compared
How the weather changes from September to November. Tap a month to open it.
| SeptemberSep | OctoberOct | NovemberNov | |
|---|---|---|---|
| Score | 32 | 20 | 17 |
| Day | 19° | 15° | 11° |
| Night | 17° | 13° | 8° |
| Sea | 19° | 15° | 11° |
| Sun | 7 h | 6 h | 4 h |
| Rain days | 8 | 10 | 9 |
More details for October
- Daylight
- 11 h 11 min06:51 – 18:01
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 37 km/haverage daily peakAll months
- Cloud cover
- 53 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snowAll months
- Time zone
- UTC−4America/New_York
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %42 %
- Few rainy daysweight 20 %57 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in October
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
- Windproof jacket
Nantucket in October: quick answers
Is Nantucket hot in October?
No. In October, Nantucket is cool: daytime highs average 15 °C and nights drop to about 13 °C.
Can you swim in Nantucket in October?
Only if you don't mind cold water: in October the sea averages just 15.3 °C. Comfortable swimming is possible in August.
Does it rain much in Nantucket in October?
Rain is frequent, with about 10 rainy days and 131 mm in total.
Nantucket month by month
The whole year in NantucketAll destinations: USAWhere to go in OctoberSea temperature in October
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences