Half Moon Bay Weather Conditions
Current Temperature Level
17 °C
26 AQI
Air quality index is: Good
Last Updated: 2025-09-13 23:00 (Local Time)
MapHalf Moon Bay
Half Moon Bay Weather Parameters
8 km/h
4 m/s
290° WNW
100 %
13 km
0 mm
1015 mb
UV Index0
Suggestions for
SundayHalf Moon Bay14 Sep.
Hydration• Stay Hydrated
Clothing• Layering Must
Driving• Enjoy Driving
Sunscreen• ApplyTrending in United States
India Floods 2025: How Waterlogging Is Creating a Hidden Air Pollution Crisis?
Half Moon Bay 10-Days Weather Forecast
Today
17°C
91 %Monday
17°C84 %Tuesday
17°C79 %Wednesday
17°C70 %Thursday
15°C84 %Friday
16°C83 %Saturday
16°C79 %Sunday
15°C85 %Monday
15°C82 %Tuesday
16°C81 %Partly Cloudy
Periodic cloud cover with temperature at 17 °C. Humidity will be at 91%, and winds will be at 16.2 km/h.21°C / 15°C
Humi.91 %
Prec.0 mm
Sunrise
06:51 AM12hrs 28min
Sunset
07:19 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Overcast
16 °C
97 %
0
7.6 kmph / WNW
Overcast 
Feels 15.6 °C
Cover 100 %
Visibility 2 km
1 AM
Overcast
16 °C
97 %
0
7.2 kmph / WNW
Overcast Feels 15.6 °C
Cover 100 %
Visibility 2 km
2 AM
Overcast
16 °C
97 %
0
8.3 kmph / WNW
Overcast Feels 15.5 °C
Cover 100 %
Visibility 2 km
3 AM
Overcast
16 °C
97 %
0
7.6 kmph / WNW
Overcast Feels 15.5 °C
Cover 100 %
Visibility 2 km
4 AM
Overcast
16 °C
97 %
0
7.6 kmph / WNW
Overcast Feels 15.5 °C
Cover 100 %
Visibility 2 km
5 AM
Overcast
16 °C
97 %
0
6.8 kmph / WNW
Overcast Feels 15.5 °C
Cover 100 %
Visibility 2 km
6 AM
Overcast
16 °C
97 %
0
6.1 kmph / WNW
Overcast Feels 15.5 °C
Cover 100 %
Visibility 2 km
7 AM
Overcast
16 °C
97 %
0
5.8 kmph / WNW
Overcast Feels 15.5 °C
Cover 100 %
Visibility 2 km
8 AM
Mist
16 °C
97 %
0.2
7.6 kmph / WNW
MistFeels 15.7 °C
Cover 100 %
Visibility 10 km
9 AM
Mist
16 °C
96 %
0.9
9 kmph / WNW
MistFeels 16.1 °C
Cover 100 %
Visibility 10 km
10 AM
Mist
17 °C
96 %
2.3
10.4 kmph / NW
MistFeels 16.8 °C
Cover 100 %
Visibility 10 km
11 AM
Overcast
18 °C
92 %
4.1
11.2 kmph / WNW
Overcast Feels 17.7 °C
Cover 99 %
Visibility 10 km
12 PM
Cloudy
19 °C
86 %
6.4
11.9 kmph / WNW
Cloudy Feels 18.8 °C
Cover 64 %
Visibility 10 km
1 PM
Partly Cloudy
20 °C
80 %
7.3
13.3 kmph / WNW
Partly Cloudy Feels 19.6 °C
Cover 45 %
Visibility 10 km
2 PM
Partly Cloudy
20 °C
78 %
6.7
14.8 kmph / WNW
Partly Cloudy Feels 20.3 °C
Cover 45 %
Visibility 10 km
3 PM
Partly Cloudy
20 °C
77 %
5.2
14.8 kmph / WNW
Partly Cloudy Feels 20.4 °C
Cover 46 %
Visibility 10 km
4 PM
Partly Cloudy
20 °C
79 %
3.1
15.5 kmph / WNW
Partly Cloudy Feels 20.1 °C
Cover 47 %
Visibility 10 km
5 PM
Partly Cloudy
20 °C
81 %
1.5
16.2 kmph / WNW
Partly Cloudy Feels 19.5 °C
Cover 46 %
Visibility 10 km
6 PM
Partly Cloudy
19 °C
85 %
0.5
15.1 kmph / NW
Partly Cloudy Feels 18.5 °C
Cover 46 %
Visibility 10 km
7 PM
Cloudy
17 °C
90 %
0
12.6 kmph / NW
Cloudy Feels 17.3 °C
Cover 69 %
Visibility 10 km
8 PM
Cloudy
16 °C
94 %
0
11.5 kmph / NW
Cloudy Feels 16.4 °C
Cover 82 %
Visibility 10 km
9 PM
Overcast
16 °C
95 %
0
9.7 kmph / WNW
Overcast Feels 15.8 °C
Cover 93 %
Visibility 10 km
10 PM
Mist
15 °C
96 %
0
8.3 kmph / WNW
MistFeels 15.1 °C
Cover 98 %
Visibility 10 km
11 PM
Partly Cloudy
15 °C
93 %
0
7.9 kmph / WNW
Partly Cloudy Feels 14.7 °C
Cover 46 %
Visibility 10 km
Today
17°C91 %Monday
17°C84 %Tuesday
17°C79 %Wednesday
17°C70 %Thursday
15°C84 %Friday
16°C83 %Saturday
16°C79 %Sunday
15°C85 %Monday
15°C82 %Tuesday
16°C81 %Temp16 °C
ConditionOvercast
Humidity97 %
Feels15.6 °C
Cover100 %
Visibility2 km
Wind Speed & Dir.7.6 kmph / WNW
UV0
Half Moon Bay 30-Days (September 2025) Weather Forecast
Sun.
Mon.
Tue.
Wed.
Thu.
Fri.
Sat.
1Mon.
21°13 °C
2Tue.
21°13 °C
3Wed.
21°14 °C
4Thu.
19°13 °C
5Fri.
18°14 °C
6Sat.
20°14 °C
7Sun.
21°16 °C
8Mon.
21°15 °C
9Tue.
21°17 °C
10Wed.
20°17 °C
11Thu.
19°15 °C
12Fri.
19°15 °C
13Today
17°15 °C
14Sun.
20°15 °C
15Mon.
22°14 °C
16Tue.
22°16 °C
17Wed.
20°15 °C
18Thu.
19°15 °C
19Fri.
19°15 °C
20Sat.
18°13 °C
21Sun.
20°13 °C
22Mon.
19°14 °C
23Tue.
18°13 °C
24Wed.
21°14 °C
25Thu.
20°14 °C
26Fri.
22°15 °C
27Sat.
22°15 °C
28Sun.
21°15 °C
29Mon.
20°14 °C
30Tue.
20°14 °C
SeptemberWeather Overview
No. of days:
Sunny
9
Cloudy
9
Rainy
5
Snowy
0
The monthly weather averages in Half Moon Bay consist of 9 sunny days, 9 cloudy days, 5 rainy days, and 0 snowy days.
Half Moon Bay's Locations Weather Conditions
United States's Hottest Cities - September 2025
1.
Sun City, United States
Clear
11%
0
6.8 kmph / WNW
2.
Surprise, United States
Clear
11%
0
6.8 kmph / WNW
3.
Phoenix, United States
Clear
19%
0
6.8 kmph / NW
4.
Guadalupe, United States
Clear
19%
0
7.2 kmph / NNW
5.
Tolleson, United States
Clear
19%
0
9.7 kmph / NW
6.
Tempe, United States
Clear
19%
0
5.8 kmph / N
7.
Blythe, United States
Clear
18%
0
6.8 kmph / SSW
8.
San Tan Valley, United States
Clear
16%
0
7.6 kmph / NNE
9.
Yuma, United States
Clear
20%
0
7.9 kmph / W
10.
Eagle Pass, United States
Partly cloudy
46%
0
24.1 kmph / SE
Last Updated: 14 Sept 2025, 06:29 AM
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