Where is Belmont Creek?

Belmont Creek is a river in California.

What is the water temperature at Belmont Creek?

As of August 23, 2026, the water temperature at Belmont Creek in California is 71°F (21°C), measured by USGS gauge 11162765, 4.4 miles away.

Updated June 13, 2026

Belmont Creek

River

Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 71°F, within the comfortable 70–86°F range.

Water temperature is 71°F, within the comfortable 70–86°F range.
No official beach advisory posted (California Water Boards — FHAB Reports checked).

See full conditions ↓Can I swim today? →

Good to swimGreat conditions today

natural watercourse in San Mateo County, California, United States of America

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Comfortable for a swim today

Good to swim

Comfortable for a swim today: water temperature is 71°F, within the comfortable 70–86°F range.

Water temperature is 71°F, within the comfortable 70–86°F range. — USGS gauge 11162765, as of Aug 23, 10:45 AM gauge-local time
No official beach advisory posted (California Water Boards — FHAB Reports checked).

Water temp

71°F

21°C

Official advisories

Checked against California Water Boards — FHAB Reports — no advisory posted.

Live, provisional data from USGS gauge SF BAY A SAN MATEO BRIDGE NR FOSTER CITY CA (4.4 mi away), as of Aug 23, 10:45 AM gauge-local time.

Live map near here →

Weather at Belmont Creek

H: 87° L: 55°

Overcast

81°

Feels like 81°

Precipitation

15%

Humidity

43%

Wind

5 mph

UV Index

Water Conditions:

🏊Perfect for swimming🧴High UV - use sunscreen

12 AM

59°

3 AM

57°

6 AM

55°

9 AM

66°

12 PM

81°

3 PM

87°

6 PM

81°

9 PM

68°

Pack smarter for Belmont Creek

Useful gear categories for this kind of water spot. These links open Amazon search results so you can compare current options.

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River Water ShoesGood grip helps on slick rocks, banks, and shallow crossings.

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River TubeUseful to compare if tubing is part of the plan.

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Floating Dry BagKeeps valuables together around current and splash.

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Polarized SunglassesCuts glare for fishing, paddling, and reading shallow water.

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Frequently asked questions

Where is Belmont Creek?: Belmont Creek is a river in California.
What is the water temperature at Belmont Creek?: As of August 23, 2026, the water temperature at Belmont Creek in California is 71°F (21°C), measured by USGS gauge 11162765, 4.4 miles away.
Can you swim at Belmont Creek?: Comfortable for a swim today: water temperature is 71°F, within the comfortable 70–86°F range. Checked August 23, 2026.

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Location & Contact

California

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