Temperature
Warm by day, mild at night.
80°Ftypical Aug high
Mystic
United States · Northeast US
Mystic is most comfortable in summer and autumn. Summers are warm and winters are cold. Rain is frequent in most months. Humidity is usually low.
Best time to go
12 mo · Typical year
Temperature range
26°F to 81°F
Rain
11 days/mo
Sunshine
8.7 h/day
Humidity feel
Generally dry
When to visit
Month-by-month fit
Precipitation
Rainfall is lower than usual here.
32%wet-day frequency
AmountWet-day chance
Sunshine
A mix of sunshine and cloud.
10.9 hAug sunshine
Heat & humidity by month
Warm days, with brief hot afternoons and occasional humid spells.
46%Aug share of humid air hours
Easy airWarm airHot airHumid airVery humid air
Hourly comfort pattern
In August, afternoons feel about 81° and nights feel near 69°.
FreezingVery coldColdCoolComfortableWarmNight shading
More detailIncludes sky, daypart comfort, sea, and wind
Cloud cover
Partly cloudy across the month.
44%Aug clear sky
ClearCloud cover
Sea temperature
74°Aug sea temp
Typical August day
August late afternoons are around 80°F, easing to about 74°F in early evening.
Avg temp Typical range
Morning74°F
Feels 75°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
Feels 76°F
Rain12%
Cloud54%
Humid airModerate
Sun intensityMinimal
Best windowWind pattern
Calm winds are typical in August.
6 mphAug Light breeze
Typical wind speed (mph)
Similar
Similar things to doPortoPortugalSimilar things to doNew York CityUnited StatesSimilar things to doSeoulSouth KoreaSimilar things to doViennaAustria
Want a side-by-side climate view? Compare Mystic with Porto.
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.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 19, 2026
Data & methodology