Mission Bay, CA

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A photo of Mission Bay in San Diego, California looking to the east-northeast. Visible are the Giant Dipper Roller Coaster, Bonita Cove, Bahia Point, Vacation Island and Fiesta Island.
Mission Bay in San Diego, California Looking to the East-Northeast. - Philkon (Phil Konstantin), CC BY-SA 3.0, via Wikimedia Commons

Today’s Forecast:

🌤
°F
High: 75° | Low: 70°
Current Temperature
Station: MSDSD
Observed at: 7:20 pm CDT on 9/26/26
Wind: 2 mph | Humidity: %
⚠️
Coastal Flood Advisory
Coastal Flood Advisory issued September 26 at 2:08PM PDT until September 30 at 5:00PM PDT by NWS San Diego CA (Expires: September 30, 2026 7:00 pm)
Show Alert Details & Instructions
Description: * WHAT...For the Beach Hazards Statement, minor tidal overflow expected due to the combination of high tides and elevated surf. For the Coastal Flood Advisory, minor coastal flooding expected due to the combination of high tides and elevated surf. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...For the Beach Hazards Statement, through late Sunday night. For the Coastal Flood Advisory, from 5 AM Monday to 5 PM PDT Wednesday. * IMPACTS...Minor coastal flooding and minor coastal erosion expected during high tides. Additionally, elevated surf will lead to strong rip currents. * ADDITIONAL DETAILS...Elevated surf of 3-5 feet expected. Local sets to 6 feet possible on south-facing beaches. Morning high tides are expected to peak between 6.7 feet and 7.0 through Wednesday, peaking Tuesday morning. The listed tide predictions have been corrected to reflect current trends in actual tide observations. Instructions: Remain out of the water to avoid hazardous swimming conditions. Avoid beaches during morning high tides.
⚠️
Beach Hazards Statement
Beach Hazards Statement issued September 26 at 2:08PM PDT until September 28 at 5:00AM PDT by NWS San Diego CA (Expires: September 28, 2026 7:00 am)
Show Alert Details & Instructions
Description: * WHAT...For the Beach Hazards Statement, minor tidal overflow expected due to the combination of high tides and elevated surf. For the Coastal Flood Advisory, minor coastal flooding expected due to the combination of high tides and elevated surf. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...For the Beach Hazards Statement, through late Sunday night. For the Coastal Flood Advisory, from 5 AM Monday to 5 PM PDT Wednesday. * IMPACTS...Minor coastal flooding and minor coastal erosion expected during high tides. Additionally, elevated surf will lead to strong rip currents. * ADDITIONAL DETAILS...Elevated surf of 3-5 feet expected. Local sets to 6 feet possible on south-facing beaches. Morning high tides are expected to peak between 6.7 feet and 7.0 through Wednesday, peaking Tuesday morning. The listed tide predictions have been corrected to reflect current trends in actual tide observations. Instructions: Remain out of the water to avoid hazardous swimming conditions. Avoid beaches during morning high tides.

Tonight:Mostly cloudy, with a low around 70. Northwest wind 0 to 5 mph.
Sunday:Mostly cloudy, with a high near 78. Northwest wind 5 to 10 mph.
Sunday Night:Mostly cloudy, with a low around 70. Northwest wind 5 to 10 mph.

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Today’s Report:

🛶 Paddling

Excellent
  96 /100

Excellent for paddling. High near 78°F. Low rain risk (11%). Breezy winds (10 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Marginal weather factor
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Use Caution 45/100
Use Caution for paddling. High near 74°F. Low rain risk (5%). Breezy winds (15 mph).

⛵ Boating

Excellent
  100 /100

Excellent for boating. High near 78°F. Low rain risk (11%). Light wind (10 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Use Caution 45/100
Use Caution for boating. High near 74°F. Low rain risk (5%). Breezy winds (15 mph).

🚲 Biking

Excellent
  100 /100

Excellent for biking. High near 78°F. Low rain risk (11%). Light wind (10 mph).

  • Temp: Favorable conditions
  • Rain: Favorable conditions
  • Wind: Favorable conditions
  • Thunderstorm: Favorable conditions
Tomorrow's Outlook:
Excellent 97/100
Excellent for biking. High near 74°F. Low rain risk (5%). Breezy winds (15 mph).

About Mission Bay

Mission Bay is an outdoor-planning page for Mission Bay, Fiesta Island, and connected waterfronts. It has a distinct purpose centered on protected-water wind, boat traffic, paddling, bike paths, tides, and crowds, with the forecast used to choose the safest and most comfortable version of the day.

Make the Most of a Mission Bay Day

Start by comparing conditions across Mission Bay, Fiesta Island, and the rest of the coverage area. Choose among paddling, boating, biking based on wind, precipitation, temperature, visibility, water or trail conditions, road access, smoke, and available daylight.

Weather Tips for Mission Bay

  • Conditions around Mission Bay, Fiesta Island, and connected waterfronts can differ sharply from nearby towns; protected-water wind, boat traffic, paddling, bike paths, tides, and crowds are the main planning variables.
  • Check wind, waves, current, tides where relevant, water temperature, and lightning before launching; keep a land-based alternative ready.
  • Cold ocean water, marine fog, swell, beach wind, and winter storms can matter even when the inland forecast looks mild.
  • Crowds and parking can narrow the useful weather window, so arrive early and keep a lower-commitment nearby option.

Nearby Towns and Areas

This page covers Mission Bay, Fiesta Island, and connected waterfronts. It can also be useful when planning outdoor time near:

  • Mission Bay
  • Fiesta Island
  • Crown Point
  • Ski Beach
  • Mission Beach
  • Ocean Beach
  • San Diego River

Plan Around the Conditions

Use the forecast to choose the best version of Mission Bay rather than forcing one itinerary. A shorter route, earlier launch, sheltered shoreline, lower-elevation trail, or town-based backup can preserve the day when conditions change.

7-Day Forecast for Mission Bay

🌤
°F
High: 75° | Low: 70°
Current Temperature
Station: MSDSD
Observed at: 7:20 pm CDT on 9/26/26
Wind: 2 mph | Humidity: %
Sun ☁
78° 70°
11%
Mon ⛅
74° 67°
5%
Tue ☀
77° 71°
0%
Wed ⛅
83° 70°
0%
Thu ⛅
83° 70°
0%
Fri ⛅
83° 70°
0%
Sat ☀
83° --°
1%

7-Day High Temperature Trend

78° Sun 74° Mon 77° Tue 83° Wed 83° Thu 83° Fri 83° Sat

7-Day Low Temperature Trend

70° Sun 67° Mon 71° Tue 70° Wed 70° Thu 70° Fri 50° Sat

📊 7-Day Outdoor Outlook

Good Fair Poor 80 Sun 100 Mon 85 Tue 20 Wed 20 Thu 20 Fri 20 Sat
Forecast data from the National Weather Service  |  Last Updated: September 26, 2026 8:41 pm CDT

Mission Bay Weather by Season

Winter

At Mission Bay, winter storms can make open beaches rough while also bringing stronger wind, rain, runoff, and choppy harbor water. Protected channels may be more manageable than the ocean, but tides, boat traffic, and water quality still need checking.

Spring

Around Mission Bay, Fiesta Island, and connected waterfronts, spring brings mild temperatures, variable marine cloud cover, and afternoon breezes. Harbor paddling can offer a flexible alternative to exposed surf zones when wind and traffic are manageable.

Summer

For protected-water wind, boat traffic, paddling, bike paths, tides, and crowds, marine layer is common in the morning, with busy beaches, bike paths, ramps, and harbor channels later in the day. Cold ocean water, afternoon wind, tides, and vessel wakes remain important even in fair weather.

Fall

Near Mission Bay and the surrounding area, early fall often provides warm beach weather and calmer morning harbor windows. Offshore wind, occasional heat, and the first late-season storms can change conditions quickly.

Key Climate Data Points

  • Warmest months: August through October.
  • Coolest months: December through February.
  • Wettest season: December through March.
  • Driest season: July through September.
  • Best outdoor window: Late spring and early fall for combined beach, biking, boating, and harbor paddling.