Temperature
Warm by day, mild at night.
82°Ftypical August high
Typical range
August climate
August in Mystic
United States · Northeast US
Warm days and plenty of sun.
Good overall
Late
Daytime high
82°F
Lows around 66°F
Rain
Several rainy days
Sun
11 h/day
Air feel
Humid
Sea temp
71°F
Cool water for swimming
When to visit
Month-by-month fit
Best
Precipitation
Several rainy days, mostly brief and on-and-off. About 11 wet days, the highest monthly average.
35%wet-day frequency
AmountWet-day chance
Sunshine
A mix of sunshine and cloud.
10.9 hAugust sunshine
Heat & humidity by month
Warm days, with humid periods.
46%August Heat feel
Easy airWarm airHot airHumid airVery humid air
Hourly temperature pattern
In August, afternoons feel about 81° and nights feel near 69°.
FreezingVery coldColdCoolComfortableWarmNight hours
Clear sky
Partly cloudy skies this month.
44%August Clear sky
Clear skyCloud
Wind pattern
Calm winds are typical in August.
6 mphAugust Calm
Sea temperature
71°FAugust sea temp
More detailIncludes daypart comfort
Typical August day
August late afternoons are around 80°F, easing to about 74°F in early evening.
Avg temp Typical range
Morning74°F
Rain14%
Cloud55%
Humid airModerate
Sun intensityModerate
Midday80°F
Rain19%
Cloud61%
Humid airModerate
Sun intensityStrong
Late afternoon80°F
Rain21%
Cloud62%
Humid airModerate
Sun intensityModerate
Early evening74°F
Rain12%
Cloud54%
Humid airModerate
Sun intensityMinimal
Best windowData tableView month-by-month numbers
View month-by-month numbers
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% | Sea°F |
|---|---|---|---|---|---|---|---|
| Jan | 39 | 26 | 3.8 | 10 | 6.5 | 66 | 42 |
| Feb | 41 | 27 | 3.2 | 9 | 7.4 | 64 | 39 |
| Mar | 49 | 33 | 4.2 | 10 | 8.3 | 62 | 39 |
| Apr | 59 | 43 | 4.0 | 11 | 9.3 | 63 | 43 |
| May | 69 | 52 | 3.6 | 11 | 10.1 | 69 | 51 |
| Jun | 77 | 61 | 3.8 | 10 | 11.2 | 72 | 61 |
| Jul | 83 | 67 | 3.8 | 11 | 11.6 | 72 | 69 |
| Aug | 82 | 66 | 4.1 | 11 | 10.9 | 74 | 71 |
| Sep | 75 | 60 | 4.0 | 9 | 9.2 | 75 | 67 |
| Oct | 64 | 49 | 4.2 | 9 | 8.0 | 73 | 61 |
| Nov | 53 | 39 | 3.2 | 8 | 6.5 | 68 | 54 |
| Dec | 44 | 31 | 4.6 | 11 | 5.8 | 69 | 47 |
Similar climates
Similar
Similar travel styleBeaconUnited StatesSimilar travel styleBerkshiresUnited StatesSimilar travel styleEast HamptonUnited StatesSimilar travel styleGreenport / North ForkUnited States
Want a side-by-side climate view? Compare Mystic with Beacon.
Climate data notePlanning guidance, not a forecast
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology