Hammonasset Beach & Madison–Clinton Shore, CT

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Hammonasset Beach State Park, Small sand dunes before the beach, Connecticut, USA
Hammonasset Beach State Park, Small sand dunes before the beach, Connecticut, USA - rickpilot_2000, CC BY 2.0, via Wikimedia Commons

Today’s Forecast:

☀
79°F
Current Temperature
Clear
Station: KHVN
Observed at: 11:35 am CDT on 8/30/26
Wind: 8 mph | Humidity: 58%
Today:A chance of rain showers after 5pm. Mostly sunny. High near 79, with temperatures falling to around 77 in the afternoon. Southwest wind 5 to 8 mph. Chance of precipitation is 30%.
Tonight:A chance of rain showers before 5am. Mostly cloudy. Low around 65, with temperatures rising to around 67 overnight. West wind 1 to 8 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
Monday:Sunny. High near 77, with temperatures falling to around 75 in the afternoon. East wind around 5 mph.
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Today’s Report:

🥾 Hiking

Excellent
  90 /100

Excellent for hiking. High near 78°F. Low rain risk (26%). Light wind (8 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 94/100
Excellent for hiking. High near 76°F. Low rain risk (5%).

🚲 Biking

Excellent
  94 /100

Excellent for biking. High near 78°F. Risk of evening rain (26%). Light wind (8 mph).

  • Temp: Favorable conditions
  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for biking. High near 76°F. Low rain risk (5%).

⛺ Camping

Excellent
  92 /100

Excellent for camping. High near 78°F. Low rain risk (26%). Light wind (8 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 94/100
Excellent for camping. High near 76°F. Low rain risk (5%).

🛶 Paddling

Excellent
  89 /100

Excellent for paddling. High near 78°F. Risk of evening rain (26%). Light wind (8 mph).

  • Temp: Favorable conditions
  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for paddling. High near 76°F. Low rain risk (5%).

🐟 Fishing

Excellent
  93 /100

Excellent for fishing. High near 78°F. Low rain risk (26%). Light wind (8 mph).

  • Temp: Marginal weather factor
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 95/100
Excellent for fishing. High near 76°F. Low rain risk (5%).

🎪 Outdoor Events / Activities

Excellent
  90 /100

Excellent for outdoor events / activities. High near 78°F. Risk of evening rain (26%). Light wind (8 mph).

  • Temp: Favorable conditions
  • Rain: Marginal weather factor
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 100/100
Excellent for outdoor events / activities. High near 76°F. Low rain risk (5%).

About Hammonasset Beach & Madison–Clinton Shore

The representative point supports planning for Sound wind-driven chop, tide, fog, cold water, water quality, campground and beach closures.

Planning the Day

Move a paddle into protected water or choose a shore trail when Sound wind and thunderstorm outflow increase; follow posted fishing areas and campground status.

Weather and Access Tips

  • Use the central Sound marine forecast with beach, campground and fishing-area notices rather than exposed-Atlantic surf assumptions.
  • Move paddling into protected water or remain ashore when fog, cold water, wind-driven chop or thunderstorm outflow increases.

Nearby Towns and Areas

  • Madison
  • Clinton
  • Meigs Point
  • Clinton Harbor

7-Day Forecast

☀
79°F
Current Temperature
Clear
Station: KHVN
Observed at: 11:35 am CDT on 8/30/26
Wind: 8 mph | Humidity: 58%
Sun 🌧
79° 65°
26%
Mon ☀
77° 66°
5%
Tue 🌧
78° 65°
76%
Wed 🌧
76° 65°
37%
Thu ⛈
78° 64°
61%
Fri ⛈
78° 61°
24%
Sat 🌧
75° 60°
28%

7-Day High Temperature Trend

79° Sun 77° Mon 78° Tue 76° Wed 78° Thu 78° Fri 75° Sat

7-Day Low Temperature Trend

65° Sun 66° Mon 65° Tue 65° Wed 64° Thu 61° Fri 60° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 75 Sun 85 Mon 16 Tue 86 Wed 16 Thu 44 Fri 100 Sat
Forecast data from the National Weather Service  |  Last Updated: August 30, 2026 12:14 pm CDT

Hammonasset Beach & Madison–Clinton Shore Weather by Season

Winter

Cold Sound water, wind and reduced services dominate even when inland air is mild.

Spring

Fog and chilly water persist as camping and beach operations resume.

Summer

Heat, water-quality advisories, lightning and afternoon chop affect beaches, paddling and events.

Fall

Warm water overlaps with tropical systems and early nor’easters before camping services taper.

Key Climate Data Points

  • Local climate: Central Sound maritime climate; annual mean temperature roughly low 50s °F; water warms later than inland air and moderates coastal extremes.
  • Warmest or primary-use period: Late June through September is the main beach, campground and program season after Sound water slowly warms.
  • Coldest or limited-access period: December through March brings cold water, strong wind exposure and sharply reduced services despite modest snowfall.
  • Primary hazard season: Summer water-quality and thunderstorm issues lead into tropical-system risk in late summer and nor’easters in fall.
  • Best practical window: Late June and September often offer broad access and milder crowds when marine wind, fog and advisories remain favorable.