Half Moon Bay Weather Conditions
Current Temperature Level
21 °C
22 AQI
Air quality index is: Good
Last Updated: 2025-09-07 12:00 (Local Time)
MapHalf Moon Bay
Half Moon Bay Weather Parameters
13 km/h
4 m/s
300° WNW
75 %
16 km
0 mm
1020 mb
UV Index6
Suggestions for
TodayHalf Moon Bay7 Sep.
Hydration• Stay Hydrated
Clothing• Layering Must
Driving• Drive Safely
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
87 %Monday
17°C88 %Tuesday
16°C90 %Wednesday
16°C91 %Thursday
16°C85 %Friday
16°C84 %Saturday
16°C84 %Sunday
16°C85 %Monday
16°C75 %Tuesday
18°C61 %Cloudy
Mostly cloudy skies with a high of 17 °C. Humidity at 87% and winds around 14 km/h.20°C / 15°C
Humi.87 %
Prec.0 mm
Sunrise
06:45 AM12hrs 44min
Sunset
07:29 PMTime
Condition
Temp
Humidity
UV
Wind Speed & Dir.
12 AM
Overcast
16 °C
93 %
0
5.4 kmph / NW
Overcast 
Feels 15.9 °C
Cover 88 %
Visibility 10 km
1 AM
Mist
16 °C
94 %
0
5.4 kmph / NNW
MistFeels 15.8 °C
Cover 91 %
Visibility 10 km
2 AM
Partly Cloudy
16 °C
93 %
0
2.9 kmph / N
Partly Cloudy Feels 15.7 °C
Cover 47 %
Visibility 10 km
3 AM
Partly Cloudy
16 °C
93 %
0
3.2 kmph / NNW
Partly Cloudy Feels 15.7 °C
Cover 53 %
Visibility 10 km
4 AM
Partly Cloudy
16 °C
93 %
0
3.6 kmph / N
Partly Cloudy Feels 15.8 °C
Cover 54 %
Visibility 10 km
5 AM
Cloudy
16 °C
93 %
0
2.9 kmph / N
Cloudy Feels 15.8 °C
Cover 64 %
Visibility 10 km
6 AM
Cloudy
16 °C
93 %
0
4 kmph / NNW
Cloudy Feels 15.9 °C
Cover 63 %
Visibility 10 km
7 AM
Cloudy
16 °C
93 %
0
3.2 kmph / NNE
Cloudy Feels 16 °C
Cover 65 %
Visibility 10 km
8 AM
Cloudy
16 °C
92 %
0.4
3.6 kmph / N
Cloudy Feels 16.2 °C
Cover 68 %
Visibility 10 km
9 AM
Cloudy
17 °C
90 %
1.4
5.8 kmph / NNW
Cloudy Feels 16.6 °C
Cover 77 %
Visibility 10 km
10 AM
Cloudy
17 °C
88 %
2.7
7.2 kmph / NW
Cloudy Feels 17.2 °C
Cover 83 %
Visibility 10 km
11 AM
Cloudy
18 °C
84 %
4.6
9.7 kmph / NW
Cloudy Feels 17.9 °C
Cover 71 %
Visibility 10 km
12 PM
Partly cloudy
21 °C
83 %
6.2
12.6 kmph / WNW
Partly cloudyFeels 18.6 °C
Cover 75 %
Visibility 16 km
1 PM
Partly Cloudy
19 °C
77 %
6.9
13.7 kmph / WNW
Partly Cloudy Feels 19.1 °C
Cover 56 %
Visibility 10 km
2 PM
Partly Cloudy
19 °C
75 %
6.6
13 kmph / WNW
Partly Cloudy Feels 19.4 °C
Cover 44 %
Visibility 10 km
3 PM
Partly Cloudy
19 °C
74 %
5.5
13.3 kmph / WNW
Partly Cloudy Feels 19.3 °C
Cover 40 %
Visibility 10 km
4 PM
Partly Cloudy
19 °C
75 %
3.8
14 kmph / WNW
Partly Cloudy Feels 19.1 °C
Cover 41 %
Visibility 10 km
5 PM
Partly Cloudy
19 °C
77 %
1.9
13 kmph / WNW
Partly Cloudy Feels 18.5 °C
Cover 40 %
Visibility 10 km
6 PM
Partly Cloudy
18 °C
80 %
0.6
12.2 kmph / WNW
Partly Cloudy Feels 17.8 °C
Cover 43 %
Visibility 10 km
7 PM
Partly Cloudy
17 °C
85 %
0
9.7 kmph / NW
Partly Cloudy Feels 16.8 °C
Cover 44 %
Visibility 10 km
8 PM
Partly Cloudy
16 °C
90 %
0
6.5 kmph / NW
Partly Cloudy Feels 16 °C
Cover 54 %
Visibility 10 km
9 PM
Cloudy
16 °C
93 %
0
4.7 kmph / NW
Cloudy Feels 15.5 °C
Cover 73 %
Visibility 10 km
10 PM
Mist
15 °C
95 %
0
4.7 kmph / NW
MistFeels 15.2 °C
Cover 82 %
Visibility 2 km
11 PM
Mist
15 °C
95 %
0
4 kmph / NW
MistFeels 14.9 °C
Cover 84 %
Visibility 2 km
Today
17°C87 %Monday
17°C88 %Tuesday
16°C90 %Wednesday
16°C91 %Thursday
16°C85 %Friday
16°C84 %Saturday
16°C84 %Sunday
16°C85 %Monday
16°C75 %Tuesday
18°C61 %Temp19 °C
ConditionPartly Cloudy
Humidity77 %
Feels19.1 °C
Cover56 %
Visibility10 km
Wind Speed & Dir.13.7 kmph / WNW
UV6.9
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.
18°14 °C
7Today
18°14 °C
8Mon.
19°14 °C
9Tue.
18°15 °C
10Wed.
18°14 °C
11Thu.
17°14 °C
12Fri.
18°14 °C
13Sat.
18°13 °C
14Sun.
17°15 °C
15Mon.
19°13 °C
16Tue.
19°13 °C
17Wed.
23°14 °C
18Thu.
21°15 °C
19Fri.
20°15 °C
20Sat.
21°15 °C
21Sun.
21°15 °C
22Mon.
20°14 °C
23Tue.
21°14 °C
24Wed.
22°15 °C
25Thu.
22°15 °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
7
Cloudy
4
Rainy
14
Snowy
0
The monthly weather averages in Half Moon Bay consist of 7 sunny days, 4 cloudy days, 14 rainy days, and 0 snowy days.
United States's Hottest Cities - September 2025
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54%
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15.8 kmph / SSE
2.
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Sunny
14%
8.1
12.2 kmph / S
3.
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Sunny
44%
9.6
9.4 kmph / WSW
4.
San Bernardino, United States
Sunny
15%
9.2
12.2 kmph / SW
5.
Crestline, United States
Sunny
15%
9.4
13.3 kmph / SW
6.
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Sunny
15%
9.3
12.2 kmph / WSW
7.
Palm Springs, United States
Sunny
46%
9.5
5.8 kmph / ESE
8.
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Sunny
56%
9.4
7.6 kmph / SSE
9.
Summerlin South, United States
Sunny
22%
8.8
19.4 kmph / SSW
10.
Henderson, United States
Sunny
22%
8.8
19.8 kmph / SSW
Last Updated: 07 Sept 2025, 07:29 PM
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