Beach
Shennecossett Beach
Connecticut · United States · Pacific Ocean
41.3201, -72.0698 · Groton, 3 km
- 21°Sea · August
- 27°High · July
- 8.8 hSunshine · July
Your month at the beach
Shennecossett Beach in January
- 2°CAir, daytime high-5°C at night
- 6°CSea temperature
- 4.0 hSunshine a day
- 10 daysRainy days in the month82 mm in total
- 13 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in February
- 3°CAir, daytime high-5°C at night
- 4°CSea temperature
- 5.1 hSunshine a day
- 9 daysRainy days in the month83 mm in total
- 13 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in March
- 7°CAir, daytime high-2°C at night
- 4°CSea temperature
- 6.0 hSunshine a day
- 10 daysRainy days in the month108 mm in total
- 13 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in April
- 13°CAir, daytime high3°C at night
- 7°CSea temperature
- 7.1 hSunshine a day
- 10 daysRainy days in the month107 mm in total
- 11 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in May
- 18°CAir, daytime high9°C at night
- 11°CSea temperature
- 7.4 hSunshine a day
- 12 daysRainy days in the month88 mm in total
- 9 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in June
- 23°CAir, daytime high14°C at night
- 16°CSea temperature
- 8.2 hSunshine a day
- 12 daysRainy days in the month104 mm in total
- 8 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in July
- 27°CAir, daytime high18°C at night
- 20°CSea temperature
- 8.8 hSunshine a day
- 12 daysRainy days in the month88 mm in total
- 8 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in August
- 27°CAir, daytime high18°C at night
- 21°CSea temperature
- 8.2 hSunshine a day
- 11 daysRainy days in the month87 mm in total
- 8 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in September
- 24°CAir, daytime high14°C at night
- 20°CSea temperature
- 7.3 hSunshine a day
- 10 daysRainy days in the month100 mm in total
- 9 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in October
- 17°CAir, daytime high8°C at night
- 17°CSea temperature
- 5.2 hSunshine a day
- 10 daysRainy days in the month121 mm in total
- 11 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in November
- 11°CAir, daytime high3°C at night
- 13°CSea temperature
- 4.3 hSunshine a day
- 9 daysRainy days in the month96 mm in total
- 11 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
Shennecossett Beach in December
- 5°CAir, daytime high-2°C at night
- 9°CSea temperature
- 3.3 hSunshine a day
- 11 daysRainy days in the month115 mm in total
- 12 km/hAverage wind
Averages for 1991–2020. A rainy day is a day with at least 1 mm of rain.
The beach itself
- LifeguardedLifeguardsUsually only in the bathing season · OpenStreetMap
- 8Places to stay within 5 kmHotels, guest houses, apartments and campsites · OpenStreetMap
- 22 kmAirport: Westerly State Airport (WST)In a straight line; by road it is further Car hire at Tweed New Haven Airport (HVN) ↗
No reliable information yet on: bathing water quality, wheelchair access.
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
January from 2020 to 2025
In January 2025 the sea averaged 4.8 °C — 0.8 °C below the 1991–2020 average.
1991–2020 average: 5.6 °C
1991–2020 average: 2.0 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
February from 2020 to 2025
In February 2025 the sea averaged 3.1 °C — 0.7 °C below the 1991–2020 average.
1991–2020 average: 3.8 °C
1991–2020 average: 2.9 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
March from 2020 to 2025
In March 2025 the sea averaged 4.5 °C — 0.4 °C above the 1991–2020 average.
1991–2020 average: 4.1 °C
1991–2020 average: 6.6 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
April from 2020 to 2025
In April 2025 the sea averaged 7.1 °C — 0.4 °C above the 1991–2020 average.
1991–2020 average: 6.7 °C
1991–2020 average: 12.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
May from 2020 to 2025
In May 2025 the sea averaged 11.4 °C — 0.4 °C above the 1991–2020 average.
1991–2020 average: 11.0 °C
1991–2020 average: 18.4 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
June from 2020 to 2025
In June 2025 the sea averaged 16.1 °C — about the same as the 1991–2020 average.
1991–2020 average: 16.1 °C
1991–2020 average: 23.3 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
July from 2020 to 2025
In July 2025 the sea averaged 21.4 °C — 1.1 °C above the 1991–2020 average.
1991–2020 average: 20.3 °C
1991–2020 average: 27.2 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
August from 2020 to 2025
In August 2025 the sea averaged 21.7 °C — about the same as the 1991–2020 average.
1991–2020 average: 21.4 °C
1991–2020 average: 27.1 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
September from 2020 to 2025
In September 2025 the sea averaged 20.9 °C — 0.8 °C above the 1991–2020 average.
1991–2020 average: 20.1 °C
1991–2020 average: 23.8 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
October from 2020 to 2025
In October 2025 the sea averaged 18.7 °C — 1.8 °C above the 1991–2020 average.
1991–2020 average: 16.9 °C
1991–2020 average: 17.1 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
November from 2020 to 2025
In November 2025 the sea averaged 12.6 °C — about the same as the 1991–2020 average.
1991–2020 average: 12.8 °C
1991–2020 average: 11.0 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
December from 2020 to 2025
In December 2025 the sea averaged 7.5 °C — 1.5 °C below the 1991–2020 average.
1991–2020 average: 9.0 °C
1991–2020 average: 5.4 °C
Each bar is one year. Above the dashed line (the 1991–2020 average), that month was warmer than usual; below it, cooler.
When to go
1991–2020 averagesThe year at a glance
- Jan6°4 h82 mm
- Feb4°5 h83 mm
- Mar4°6 h108 mm
- Apr7°7 h107 mm
- May11°7 h88 mm
- Jun16°8 h104 mm
- Jul20°9 h88 mm
- Aug21°8 h87 mm
- Sep20°7 h100 mm
- Oct17°5 h121 mm
- Nov13°4 h96 mm
- Dec9°3 h115 mm
Each card is a month. The colour is the sea temperature, on the same scale as the map; in bold, the two best months for each.
Sea temperature
1991–2020 averagesClimate through the year
1991–2020 averagesRain
Sunshine
Sunshine hours are estimated from measured solar radiation, not observed directly.
Month by month
1991–2020 averagesEvery month at Shennecossett Beach: air, sea, rain and sunshine. Averages for 1991–2020.
| Month | High°C | Low°C | Sea°C | Rainmm | Rainy daysdays | Sunshineh/day | Windkm/h |
|---|---|---|---|---|---|---|---|
| January | 2 | -5 | 6 | 82 | 10 | 4.0 | 13 |
| February | 3 | -5 | 4 | 83 | 9 | 5.1 | 13 |
| March | 7 | -2 | 4 | 108 | 10 | 6.0 | 13 |
| April | 13 | 3 | 7 | 107 | 10 | 7.1 | 11 |
| May | 18 | 9 | 11 | 88 | 12 | 7.4 | 9 |
| June | 23 | 14 | 16 | 104 | 12 | 8.2 | 8 |
| July | 27 | 18 | 20 | 88 | 12 | 8.8 | 8 |
| Augustwarmest sea | 27 | 18 | 21 | 87 | 11 | 8.2 | 8 |
| September | 24 | 14 | 20 | 100 | 10 | 7.3 | 9 |
| October | 17 | 8 | 17 | 121 | 10 | 5.2 | 11 |
| November | 11 | 3 | 13 | 96 | 9 | 4.3 | 11 |
| December | 5 | -2 | 9 | 115 | 11 | 3.3 | 12 |
Swipe sideways to see the other columns.
Plan your trip
Some links above are affiliate links: if you book through them we may earn a commission, at no extra cost to you. It never changes what the data on this page says.
About these numbers
Averages are for 1991–2020; the recent years (2020–2025) are what actually happened. Neither is today's weather.
The nearest sea measurement point is 22 km away, so this figure is less precise here.
| What | Where it comes from | Nearest measurement |
|---|---|---|
| Air, rain and sunshine | NASA POWER | 26 km away |
| Sea temperature | NOAA OISST v2.1, 1991–2020 | 22 km away |
| 2020–2025, month by month | NASA POWER · NOAA OISST v2.1 | 26 km away |
| Lifeguards and places to stay | OpenStreetMap | within 1–5 km |
| Nearest airport | OurAirports | straight-line distance |
| Image at the top | Sentinel-2 cloudless (EOX) | at this spot |