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Photo by Timothy J. Quill, CC BY-SA 4.0, via Wikimedia Commons.
Block Island in September
sweet spot · the best month to go
The year in Block Island
Tap a month for its page
- JanJBlock Island in January: avoid
- FebFBlock Island in February: avoid
- MarMBlock Island in March: ok
- AprABlock Island in April: ok
- MayMBlock Island in May: ok
- JunJBlock Island in June: ok, busy
- JulJBlock Island in July: ok, busy
- AugABlock Island in August: sweet spot, busy
- SepSBlock Island in September: sweet spot
- OctOBlock Island in October: sweet spot
- NovNBlock Island in November: ok
- DecDBlock Island in December: ok
- Sweet spot
- Good
- OK
- Avoid
- Busy
Plan this trip
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Flights from
Flights
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Book with the airline
Where to stay
Book direct
Luxury
Things to do
Car hire
Rent direct
Travel insurance
Check whether your bank card or home insurance already covers this trip.
If the trip needs a visa, the travel agent or visa centre usually sells the cover it asks for.
Mobile data (eSIM)
Your own plan's EU roaming may already cover this.
Renting a pocket Wi-Fi is the other common way to stay connected.
These are sites people in book with. Each opens in a new tab, on the site's own pages.
The numbers
| Daily high | 21°C |
|---|---|
| Nightly low | 18°C |
| Feels like, afternoon | 20°C |
| Rainy days, 1 mm or more | 8 · 116 mm |
| Humidity | 81% |
| Sunshine | 9.2 h/day |
| Daylight | 12.5 h/day |
| Crowds | 100 / 100, higher is quieter |
Ten-year averages for this calendar month. A rainy day is one with at least 1 mm of rain, as a weather station counts it. The model these figures come from drizzles more than a rain gauge, the more so the warmer the month, so its days count from 2 mm, rising to 5 mm in the hottest.
Weather read at New Shoreham, by Old Harbor: ten years of ERA5 and ERA5-Land reanalysis, through Open-Meteo's open data.
How busy it gets
Public holidays in September
Holidays crowd a place out; they count toward the crowd score above.
Block Island in pictures
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Rockerboo, CC BY-SA 3.0, via Wikimedia Commons
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Timothy Burling from Fall River, Massachusetts, USA, CC BY 2.0, via Wikimedia Commons
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Elizabeth D. Boepple, CC BY-SA 3.0, via Wikimedia Commons
What to pack
- A packable rain jacket for the 8 or so rainy days.
- Sun protection: about 9 hours of sunshine a day.
- Humidity averages 81%; breathable fabrics dry faster.
Each line is a threshold over the ten-year figures above, not advice from anywhere else.
Before you go
Type A and B plugs at 120 V. Drives on the right. The currency is the United states dollar. No UK Foreign Office advice against travel. Global Affairs Canada: Exercise normal security precautions. Everything for United States: cost of living, languages, emergency numbers and health.
On arrival in Block Island: the apps, paying, getting around, tipping and the emergency numbers.
September elsewhere
- Everywhere in September
- Islands in September
- Beaches in September
- North America in September
- United States in September
In September from
The other months at Block Island
Links marked Ad pay us a commission if you book through one, at no extra cost to you. That does not affect the numbers on this page, which are computed before any link is built.