What is the weather in Half Moon Bay right now?

Current weather in Half Moon Bay is fog.

Where can I find the hourly weather forecast for Half Moon Bay?

This page shows hourly weather forecast for Half Moon Bay, including temperature, wind, precipitation, humidity and cloud cover.

Is the weather forecast for Half Moon Bay updated regularly?

Weather data for Half Moon Bay is updated regularly with the latest available observations and forecasts.

Now · 2:26 AM

Half Moon Bay Weather & Hourly Forecast

United States · California · 94019

55°F

Fog at night

Feels like: 54°F

💧 Humidity 99% 🌡 Pressure 29.94 inHg 💨 Wind 3 mph 👁 Visibility 0.6 mi ☁ Clouds 99% ☀️ UV index 0.0 · Low 🌅 Sunrise 6:57 AM 🌇 Sunset 7:06 PM

Hourly Forecast for Half Moon Bay

Today

3:00 AM

Fog at night

54° 💧 None 💨 3 mph H 99%29.94 inHg

6:00 AM

Fog at night

54° 💧 None 💨 2 mph H 99%29.94 inHg

9:00 AM

Sunny

60° 💧 None 💨 1 mph H 85%29.94 inHg

12:00 PM

Sunny

74° 💧 None 💨 3 mph H 52%29.94 inHg

3:00 PM

Mostly sunny

77° 💧 None 💨 6 mph H 50%29.88 inHg

6:00 PM

Sunny

69° 💧 None 💨 4 mph H 61%29.88 inHg

9:00 PM

Clear night

58° 💧 None 💨 1 mph H 87%29.88 inHg

Tomorrow

12:00 AM

Clear night

56° 💧 None 💨 1 mph H 89%29.88 inHg

3:00 AM

Clear night

55° 💧 None 💨 1 mph H 89%29.88 inHg

6:00 AM

Clear night

53° 💧 None 💨 2 mph H 93%29.88 inHg

9:00 AM

Sunny

63° 💧 None 💨 2 mph H 73%29.91 inHg

12:00 PM

Mostly sunny

74° 💧 None 💨 4 mph H 54%29.91 inHg

3:00 PM

Mostly cloudy

72° 💧 None 💨 6 mph H 52%29.91 inHg

6:00 PM

Overcast

63° 💧 None 💨 5 mph H 73%29.91 inHg

9:00 PM

Overcast night

60° 💧 None 💨 4 mph H 73%29.94 inHg

Friday

12:00 AM

Mostly cloudy night

58° 💧 None 💨 4 mph H 78%29.97 inHg

Today

3:00 AM

Fog at night

54° 💧 None 💨 3 mph H 99%29.94 inHg

4:00 AM

Fog at night

54° 💧 None 💨 3 mph H 99%29.91 inHg

5:00 AM

Fog at night

54° 💧 None 💨 2 mph H 99%29.91 inHg

6:00 AM

Fog at night

54° 💧 None 💨 2 mph H 99%29.94 inHg

7:00 AM

Fog

53° 💧 None 💨 2 mph H 99%29.94 inHg

8:00 AM

Mist

55° 💧 None 💨 2 mph H 97%29.94 inHg

9:00 AM

Sunny

60° 💧 None 💨 1 mph H 85%29.94 inHg

10:00 AM

Sunny

65° 💧 None 💨 1 mph H 69%29.94 inHg

11:00 AM

Sunny

70° 💧 None 💨 2 mph H 60%29.94 inHg

12:00 PM

Sunny

74° 💧 None 💨 3 mph H 52%29.94 inHg

1:00 PM

Sunny

76° 💧 None 💨 5 mph H 49%29.94 inHg

2:00 PM

Sunny

78° 💧 None 💨 5 mph H 48%29.91 inHg

3:00 PM

Mostly sunny

77° 💧 None 💨 6 mph H 50%29.88 inHg

4:00 PM

Fog

75° 💧 None 💨 6 mph H 52%29.88 inHg

5:00 PM

Sunny

72° 💧 None 💨 5 mph H 55%29.88 inHg

6:00 PM

Sunny

69° 💧 None 💨 4 mph H 61%29.88 inHg

7:00 PM

Fog

64° 💧 None 💨 3 mph H 70%29.88 inHg

8:00 PM

Fog at night

60° 💧 None 💨 2 mph H 82%29.88 inHg

9:00 PM

Clear night

58° 💧 None 💨 1 mph H 87%29.88 inHg

10:00 PM

Clear night

57° 💧 None 💨 1 mph H 89%29.88 inHg

11:00 PM

Clear night

56° 💧 None 💨 1 mph H 90%29.88 inHg

Tomorrow

12:00 AM

Clear night

56° 💧 None 💨 1 mph H 89%29.88 inHg

1:00 AM

Clear night

56° 💧 None 💨 1 mph H 89%29.88 inHg

2:00 AM

Clear night

55° 💧 None 💨 2 mph H 90%29.88 inHg

3:00 AM

Clear night

55° 💧 None 💨 1 mph H 89%29.88 inHg

4:00 AM

Clear night

55° 💧 None 💨 1 mph H 87%29.88 inHg

5:00 AM

Clear night

54° 💧 None 💨 2 mph H 89%29.88 inHg

6:00 AM

Clear night

53° 💧 None 💨 2 mph H 93%29.88 inHg

7:00 AM

Sunny

53° 💧 None 💨 1 mph H 95%29.88 inHg

8:00 AM

Sunny

57° 💧 None 💨 3 mph H 88%29.91 inHg

9:00 AM

Sunny

63° 💧 None 💨 2 mph H 73%29.91 inHg

10:00 AM

Sunny

69° 💧 None 💨 2 mph H 61%29.91 inHg

11:00 AM

Sunny

72° 💧 None 💨 3 mph H 56%29.91 inHg

12:00 PM

Mostly sunny

74° 💧 None 💨 4 mph H 54%29.91 inHg

1:00 PM

Overcast

74° 💧 None 💨 5 mph H 53%29.91 inHg

2:00 PM

Mostly cloudy

73° 💧 None 💨 6 mph H 53%29.91 inHg

3:00 PM

Mostly cloudy

72° 💧 None 💨 6 mph H 52%29.91 inHg

4:00 PM

Mostly cloudy

69° 💧 None 💨 7 mph H 58%29.91 inHg

5:00 PM

Mostly cloudy

66° 💧 None 💨 6 mph H 65%29.91 inHg

6:00 PM

Overcast

63° 💧 None 💨 5 mph H 73%29.91 inHg

7:00 PM

Overcast

61° 💧 None 💨 4 mph H 78%29.94 inHg

8:00 PM

Overcast night

60° 💧 None 💨 4 mph H 74%29.94 inHg

9:00 PM

Overcast night

60° 💧 None 💨 4 mph H 73%29.94 inHg

10:00 PM

Overcast night

58° 💧 None 💨 4 mph H 75%29.94 inHg

11:00 PM

Overcast night

58° 💧 None 💨 4 mph H 75%29.94 inHg

Friday

12:00 AM

Mostly cloudy night

58° 💧 None 💨 4 mph H 78%29.97 inHg

1:00 AM

Mostly cloudy night

58° 💧 None 💨 5 mph H 85%29.97 inHg

2:00 AM

Mostly clear night

58° 💧 None 💨 5 mph H 93%29.97 inHg

3:00 AM

Partly cloudy night

58° 💧 None 💨 5 mph H 98%29.97 inHg

4:00 AM

Overcast night

59° 💧 None 💨 6 mph H 99%29.97 inHg

5:00 AM

Overcast night

60° 💧 None 💨 6 mph H 99%29.97 inHg

6:00 AM

Overcast night

60° 💧 None 💨 6 mph H 98%29.97 inHg

7:00 AM

Overcast

60° 💧 None 💨 5 mph H 98%30.00 inHg

8:00 AM

Overcast

61° 💧 None 💨 5 mph H 96%30.00 inHg

9:00 AM

Overcast

62° 💧 None 💨 5 mph H 90%30.00 inHg

10:00 AM

Partly cloudy

65° 💧 None 💨 6 mph H 81%30.00 inHg

11:00 AM

Sunny

68° 💧 None 💨 6 mph H 72%30.03 inHg

12:00 PM

Sunny

69° 💧 None 💨 7 mph H 65%30.00 inHg

1:00 PM

Sunny

69° 💧 None 💨 8 mph H 63%30.00 inHg

2:00 PM

Sunny

69° 💧 None 💨 8 mph H 59%30.00 inHg

3:00 PM

Sunny

68° 💧 None 💨 9 mph H 56%30.00 inHg

4:00 PM

Sunny

66° 💧 None 💨 9 mph H 61%29.97 inHg

5:00 PM

Sunny

64° 💧 None 💨 8 mph H 67%29.97 inHg

8:00 PM

Clear night

58° 💧 None 💨 10 mph H 87%29.94 inHg

11:00 PM

Clear night

56° 💧 None 💨 9 mph H 93%29.97 inHg

Saturday

2:00 AM

Clear night

55° 💧 None 💨 8 mph H 95%29.94 inHg

5:00 AM

Partly cloudy night

55° 💧 None 💨 8 mph H 95%29.91 inHg

8:00 AM

Mostly cloudy

56° 💧 None 💨 6 mph H 92%29.94 inHg

11:00 AM

Partly cloudy

61° 💧 None 💨 6 mph H 76%29.94 inHg

2:00 PM

Mostly sunny

62° 💧 None 💨 7 mph H 74%29.94 inHg

5:00 PM

Overcast

60° 💧 None 💨 8 mph H 83%29.91 inHg

8:00 PM

Overcast night

58° 💧 None 💨 6 mph H 88%29.91 inHg

11:00 PM

Mostly cloudy night

56° 💧 None 💨 4 mph H 93%29.94 inHg

Sunday

2:00 AM

Mostly cloudy night

56° 💧 None 💨 5 mph H 92%29.91 inHg

5:00 AM

Overcast night

55° 💧 None 💨 5 mph H 92%29.91 inHg

8:00 AM

Overcast

57° 💧 None 💨 9 mph H 88%29.97 inHg

11:00 AM

Overcast

59° 💧 None 💨 13 mph H 78%30.00 inHg

2:00 PM

Overcast

60° 💧 None 💨 14 mph H 75%30.00 inHg

5:00 PM

Mostly sunny

59° 💧 None 💨 12 mph H 78%29.97 inHg

8:00 PM

Mostly clear night

56° 💧 None 💨 10 mph H 91%29.97 inHg

11:00 PM

Mostly clear night

55° 💧 None 💨 9 mph H 94%29.97 inHg

Monday

2:00 AM

Mostly clear night

54° 💧 None 💨 5 mph H 95%29.97 inHg

5:00 AM

Partly cloudy night

53° 💧 None 💨 1 mph H 95%29.94 inHg

8:00 AM

Partly cloudy

52° 💧 None 💨 4 mph H 96%29.97 inHg

11:00 AM

Sunny

69° 💧 None 💨 4 mph H 56%30.00 inHg

2:00 PM

Mostly sunny

66° 💧 None 💨 10 mph H 66%29.97 inHg

5:00 PM

Sunny

63° 💧 None 💨 7 mph H 72%29.91 inHg

11:00 PM

Clear night

55° 💧 None 💨 3 mph H 89%29.91 inHg

Tuesday

5:00 AM

Clear night

54° 💧 None 💨 0 mph H 86%29.88 inHg

11:00 AM

Sunny

69° 💧 None 💨 4 mph H 58%29.91 inHg

5:00 PM

Sunny

65° 💧 None 💨 10 mph H 64%29.85 inHg

11:00 PM

Clear night

57° 💧 None 💨 8 mph H 89%29.88 inHg

Wednesday

5:00 AM

Clear night

53° 💧 None 💨 1 mph H 92%29.85 inHg

11:00 AM

Sunny

79° 💧 None 💨 6 mph H 31%29.88 inHg

5:00 PM

Sunny

69° 💧 None 💨 7 mph H 56%29.83 inHg

11:00 PM

Clear night

56° 💧 None 💨 3 mph H 94%29.85 inHg

Thursday

5:00 AM

Mostly cloudy night

55° 💧 None 💨 3 mph H 98%29.83 inHg

11:00 AM

Sunny

64° 💧 None 💨 6 mph H 72%29.91 inHg

5:00 PM

Overcast

60° 💧 None 💨 6 mph H 83%29.88 inHg

11:00 PM

Clear night

56° 💧 None 💨 5 mph H 92%29.91 inHg

Friday

5:00 AM

Clear night

55° 💧 None 💨 7 mph H 91%29.88 inHg

11:00 AM

Sunny

65° 💧 None 💨 6 mph H 67%29.88 inHg

5:00 PM

Sunny

64° 💧 None 💨 5 mph H 67%29.83 inHg

11:00 PM

Clear night

56° 💧 None 💨 1 mph H 89%29.85 inHg

Saturday

5:00 AM

Clear night

54° 💧 None 💨 0 mph H 93%29.83 inHg

11:00 AM

Sunny

67° 💧 None 💨 4 mph H 67%29.88 inHg

5:00 PM

Mostly sunny

66° 💧 None 💨 4 mph H 67%29.83 inHg

11:00 PM

Partly cloudy night

56° 💧 None 💨 2 mph H 92%29.88 inHg

Sunday

5:00 AM

Partly cloudy night

55° 💧 None 💨 4 mph H 93%29.85 inHg

11:00 AM

Mostly sunny

75° 💧 None 💨 4 mph H 49%29.91 inHg

5:00 PM

Mostly sunny

71° 💧 None 💨 3 mph H 49%29.85 inHg

11:00 PM

Clear night

60° 💧 None 💨 1 mph H 73%29.88 inHg

Monday

5:00 AM

Clear night

56° 💧 None 💨 6 mph H 92%29.88 inHg

11:00 AM

Mostly sunny

72° 💧 None 💨 6 mph H 53%29.91 inHg

5:00 PM

Mostly sunny

65° 💧 None 💨 6 mph H 68%29.88 inHg

11:00 PM

Mostly cloudy night

57° 💧 None 💨 6 mph H 93%29.91 inHg

Tuesday

5:00 AM

Partly cloudy night

58° 💧 None 💨 0 mph H 91%29.91 inHg

11:00 AM

Mostly sunny

64° 💧 None 💨 4 mph H 71%29.94 inHg

5:00 PM

Partly cloudy

65° 💧 None 💨 5 mph H 68%29.91 inHg

11:00 PM

Mostly cloudy night

57° 💧 None 💨 4 mph H 98%29.97 inHg

Wednesday

5:00 AM

Mostly clear night

57° 💧 None 💨 8 mph H 96%29.97 inHg

11:00 AM

Sunny

63° 💧 None 💨 6 mph H 74%30.03 inHg

5:00 PM

Sunny

63° 💧 None 💨 10 mph H 79%30.00 inHg

In Half Moon Bay and, more broadly, across the state of California: Tonight, expect mostly cloudy skies with mild to warm temperatures ranging from 73 to 80 degrees Fahrenheit. Winds will be light, coming from the west at around 9 mph, with occasional gusts reaching up to 16 mph. No precipitation is forecast for the evening and the early night hours, so outdoor plans should be comfortable. Temperatures may gradually cool into the lower 70s later in the night, but overall, conditions will remain mild. The wind remains gentle, providing a slight breeze without causing concern. Overall, it should be a pleasant evening with no weather-related disruptions.

15-Day Weather Outlook for Half Moon Bay

TomorrowTomorrow

Mostly sunny 74°/53° 💧 None 💨 7 mph

Friday, Sep 25Fri Sep 25

Mostly cloudy 69°/56° 💧 0.001 in 💨 10 mph

Saturday, Sep 26Sat Sep 26

Mostly cloudy 62°/55° 💧 0.001 in 💨 8 mph

Sunday, Sep 27Sun Sep 27

Overcast 60°/55° 💧 0.002 in 💨 14 mph

Monday, Sep 28Mon Sep 28

Mostly sunny 69°/52° 💧 None 💨 10 mph

Tuesday, Sep 29Tue Sep 29

Sunny 69°/54° 💧 None 💨 10 mph

Wednesday, Sep 30Wed Sep 30

Sunny 79°/53° 💧 None 💨 7 mph

Thursday, Oct 1Thu Oct 1

Mostly cloudy 64°/55° 💧 None 💨 6 mph

Friday, Oct 2Fri Oct 2

Sunny 65°/55° 💧 None 💨 7 mph

Saturday, Oct 3Sat Oct 3

Mostly sunny 67°/54° 💧 None 💨 4 mph

Sunday, Oct 4Sun Oct 4

Partly cloudy 75°/55° 💧 None 💨 4 mph

Monday, Oct 5Mon Oct 5

Mostly cloudy 72°/56° 💧 None 💨 6 mph

Tuesday, Oct 6Tue Oct 6

Partly cloudy 65°/57° 💧 0.002 in 💨 5 mph

Wednesday, Oct 7Wed Oct 7

Mostly sunny 63°/57° 💧 None 💨 10 mph

TEMPERATURE OUTLOOK

Temperature & Weather Trends in Half Moon Bay

Vertical axis: °F · Color based on temperature

AIR QUALITY FORECAST

Air Quality Forecast for Half Moon Bay

Hourly forecast · Updated every 2 hours

Fair

Nearest forecast value 3:00 AM

PM2.5 Fine particles Good 5,3µg/m³

Microscopic particles that can penetrate deep into the lungs. Elevated concentrations can especially affect children, older adults and people with respiratory conditions.

PM10 Particulate matter Fair 22,8µg/m³

Includes dust, pollen and other airborne particles. High concentrations may irritate the respiratory system.

O₃ Ozone Fair 81,0µg/m³

Ground-level ozone can irritate the eyes and respiratory system when concentrations are elevated.

NO₂ Nitrogen dioxide Good 0,6µg/m³

A gas emitted mainly by traffic and some industrial activity. High exposure can affect respiratory health.

Air quality is acceptable for most people.

UV & HEALTH

UV, Sun & Health Outlook in Half Moon Bay

Maximum daily UV Today, tomorrow and the following day show the maximum UV index forecast for each day.

0–2 Low 3–5 Moderate 6–7 High 8–10 Very high 11+ Extreme

Today UV 6,8High 🙂Fair

Tomorrow UV 6,2High 🙂Fair

Friday UV 6,4High 🙂Fair

Saturday UV 6,1High 🙂Fair

Sunday UV 5,0Moderate 🙂Fair

Monday UV 5,0Moderate —Unavailable

Tuesday UV 6,0High —Unavailable

Hourly UV index today

7:00 AMUV 0,0 8:00 AMUV 0,2 9:00 AMUV 1,0 10:00 AMUV 2,6 11:00 AMUV 4,5 12:00 PMUV 6,1 1:00 PMUV 6,8 2:00 PMUV 6,4 3:00 PMUV 5,0 4:00 PMUV 3,1 5:00 PMUV 1,4 6:00 PMUV 0,4

Today's weather health advice Open today's recommendations.

Strong UV exposure

Protect exposed skin with SPF 30+ sunscreen, wear sunglasses, and try to limit direct midday sun.

Acceptable air quality

Air quality is acceptable for most people. Very sensitive people may want to reduce prolonged exertion.

Comfortable temperature conditions

Temperatures should feel comfortable for most people, with no particular heat or cold precautions needed.

Good conditions for outdoor activities

Outdoor activities can generally be enjoyed normally, with sun protection adjusted to the UV level.

WIND OUTLOOK

Hourly Wind Forecast for Half Moon Bay

Vertical axis: mph · Horizontal axis: hours

Sustained wind Max gusts

NIGHT SKY · HALF MOON BAY, CALIFORNIA

Tonight's Stargazing & Shooting Stars

Local night-sky conditions and meteor activity for Jasper.

8/100Best-hour score

No good viewing window tonight Astronomical darkness exists, but current sky conditions are unfavorable.

☁ Cloud cover 86% Real hourly forecast for the best viewing hour.

☾ Moonlight 90% Waxing Gibbous · Moon below the horizon at the best viewing hour.

☄ Meteor activity Southern Taurids Reference ZHR 7 · Radiant 60° high at the best hour.

✦ Estimated visible meteors Poor visibility Meteor activity may occur above the clouds, but local viewing conditions are not suitable.

Chance ≥1 meteor in 30 minNot meaningful

UPCOMING METEOR PERIODSStart, peak and end dates · weather should be checked closer to the peak.

SEP 20–NOV 20

Southern TauridsStart SEP 20 · Peak NOV 5 · End NOV 20 · ZHR 7 · 20% Moon at peak

ACTIVE NOW

OCT 2–NOV 7

OrionidsStart OCT 2 · Peak OCT 21 · End NOV 7 · ZHR 20 · 77% Moon at peak

UPCOMING

OCT 20–DEC 10

Northern TauridsStart OCT 20 · Peak NOV 12 · End DEC 10 · ZHR 5 · 7% Moon at peak

UPCOMING

NOV 6–NOV 30

LeonidsStart NOV 6 · Peak NOV 17 · End NOV 30 · ZHR 15 · 52% Moon at peak

UPCOMING

Experimental local observing estimate. Weather values come from the hourly forecast already used on this page. Moon position and astronomical darkness are calculated locally from time and coordinates. Meteor-shower ZHR describes ideal conditions and is not the number of meteors a person should expect to see locally.

DISCOVER WEATHER NEARBY Weather in other cities

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Forecast data for Half Moon Bay were last refreshed today at 2:26 AM. The current forecast period extends through 25/09/2026 at 12:00 AM. Weather, air-quality and UV-index data are provided through WEATHER-INFO.COM. Forecasts are produced automatically from the latest available data and are subject to periodic technical checks. This service is intended for general weather information.