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Half Moon Bay, United States Snapshot 2026
Where is Half Moon Bay?
Half Moon Bay, United States
- Continent
- Americas
- Country
- United States
- City
- Half Moon Bay
- Population
- 12.7K
- Elevation
- 22 m
- Coordinates
- 37.46°, -122.43°
Half Moon Bay is a city in United States with a population of approximately 12.7K. Average temperatures range from 9°C (48°F) in February to 23°C (73°F) in September. The best time to visit is June, July, August, September, October.
Time in Half Moon Bay right now
Open full time & time zone page 16:17 17
Monday, June 15, 2026
IANA time zone
America/Los_Angeles
Daylight saving
DST in effect
PST / PDT
Next DST change
November 1
backward -1h
Live weather in Half Moon Bay
Daylight in Half Moon Bay today
View full sunrise & sunset page Sunrise
Sunset
Day length
14h 44m
Climate normals for Half Moon Bay
Long-term monthly averages based on historical data.
January
Good 
February
Good March
Good April
Good May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October best
Excellent November
Good December
Good | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 15°C / 9°C | 13°C / 7°C | 10days (112 mm) Wet | 6.9h Fair | 84% Humid | 2.9 Moderate | Good | View Details |
| February | 15°C / 9°C | 14°C / 7°C | 7days (90 mm) Good | 8.5h Good | 80% Humid | 3.8 Moderate | Good | View Details |
| March | 15°C / 10°C | 14°C / 8°C | 12days (99 mm) Wet | 9.4h Good | 80% Humid | 5.4 High | Good | View Details |
| April | 17°C / 11°C | 17°C / 9°C | 5days (30 mm) Good | 11h Excellent | 79% Humid | 6.7 High | Good | View Details |
| May | 18°C / 12°C | 18°C / 10°C | 3days (18 mm) Excellent | 12.5h Excellent | 78% Humid | 7.6 Very High | Good | View Details |
| June best | 21°C / 13°C | 21°C / 13°C | 0days (1 mm) Excellent | 13.3h Excellent | 77% Humid | 7.9 Very High | Excellent | View Details |
| July best | 21°C / 14°C | 23°C / 14°C | 0days (0 mm) Excellent | 13.1h Excellent | 80% Humid | 7.9 Very High | Excellent | View Details |
| August best | 22°C / 15°C | 24°C / 15°C | 0days (1 mm) Excellent | 12.4h Excellent | 80% Humid | 7.5 Very High | Excellent | View Details |
| September best | 23°C / 15°C | 24°C / 16°C | 1days (3 mm) Excellent | 11.3h Excellent | 79% Humid | 6.3 High | Excellent | View Details |
| October best | 22°C / 14°C | 21°C / 14°C | 2days (24 mm) Excellent | 9.6h Good | 76% Humid | 5 Moderate | Excellent | View Details |
| November | 17°C / 11°C | 17°C / 11°C | 6days (54 mm) Good | 8.1h Good | 81% Humid | 3.4 Moderate | Good | View Details |
| December | 15°C / 9°C | 13°C / 8°C | 9days (98 mm) Wet | 6.7h Fair | 83% Humid | 2.7 Moderate | Good | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 15°C / 9°C . Feb: 15°C / 9°C . Mar: 15°C / 10°C . Apr: 17°C / 11°C . May: 18°C / 12°C . Jun: 21°C / 13°C . Jul: 21°C / 14°C . Aug: 22°C / 15°C . Sep: 23°C / 15°C . Oct: 22°C / 14°C . Nov: 17°C / 11°C . Dec: 15°C / 9°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 112 mm. Feb: 90 mm. Mar: 99 mm. Apr: 30 mm. May: 18 mm. Jun: 1 mm. Jul: 0 mm. Aug: 1 mm. Sep: 3 mm. Oct: 24 mm. Nov: 54 mm. Dec: 98 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 84%. Feb: 80%. Mar: 80%. Apr: 79%. May: 78%. Jun: 77%. Jul: 80%. Aug: 80%. Sep: 79%. Oct: 76%. Nov: 81%. Dec: 83%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 14 km/h . Feb: 16 km/h . Mar: 16 km/h . Apr: 16 km/h . May: 16 km/h . Jun: 16 km/h . Jul: 13 km/h . Aug: 13 km/h . Sep: 13 km/h . Oct: 13 km/h . Nov: 12 km/h . Dec: 12 km/h .
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 13°C . Feb: 12°C . Mar: 12°C . Apr: 12°C . May: 12°C . Jun: 13°C . Jul: 14°C . Aug: 15°C . Sep: 16°C . Oct: 15°C . Nov: 13°C . Dec: 13°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 7. May: UV 8. Jun: UV 8. Jul: UV 8. Aug: UV 8. Sep: UV 6. Oct: UV 5. Nov: UV 3. Dec: UV 3.
Frequently Asked Questions
Half Moon Bay has a population of approximately 12.7K.
The best months to visit Half Moon Bay are June, July, August, September, October, when temperatures are pleasant and rainfall is lower.
Half Moon Bay receives approximately 530mm of rainfall annually across 55 rainy days.
Half Moon Bay is located in United States, in the Americas region.
Half Moon Bay sits at an elevation of 22 m (72 ft) above sea level.