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Half Moon Bay May Weather

Averages and records for weather in Half Moon Bay, California in the month of May.
Typical Half Moon Bay May Weather
1991–2020
Average daily high 62.2 °F
Average daily low 48.1 °F
Average monthly precipitation 1.0 inches
Average monthly snow none
Half Moon Bay May Weather Records
1939–2022
Highest temperature 82 °F May 4, 2011
Lowest temperature 33 °F May 22, 2008
Highest daily low 60 °F May 17, 1997
Lowest daily high 52 °F May 1, 1975
Hottest average temperature 3.9 °F
above average
1941
Coldest average temperature -5.5 °F
below average
1991
Most daily precipitation 1.3 inches May 28, 1998
Most monthly precipitation 4.0 inches 1998
Most daily snow none -
Most monthly snow none -
Note: Daily averages are a moving average which includes 14 days before and after
Day Average (°F) Record (°F)
High Low High Low
May 1 61.8 46.3 81 33
May 2 61.8 46.5 78 35
May 3 61.9 46.7 81 35
May 4 62.0 46.9 82 38
May 5 62.0 47.0 77 37
May 6 62.0 47.1 82 36
May 7 62.1 47.2 78 35
May 8 62.0 47.3 74 38
May 9 62.1 47.3 80 37
May 10 62.1 47.4 71 37
May 11 62.1 47.5 74 36
May 12 62.2 47.6 71 37
May 13 62.2 47.7 74 35
May 14 62.2 47.9 75 39
May 15 62.2 48.0 78 37
May 16 62.1 48.2 75 37
May 17 62.1 48.3 79 36
May 18 62.1 48.4 75 35
May 19 62.1 48.5 79 38
May 20 62.2 48.6 68 38
May 21 62.2 48.7 80 38
May 22 62.3 48.8 79 33
May 23 62.3 48.8 78 35
May 24 62.3 48.9 78 40
May 25 62.4 48.9 78 38
May 26 62.5 49.1 78 40
May 27 62.7 49.2 72 40
May 28 62.8 49.3 70 40
May 29 62.8 49.4 70 40
May 30 62.8 49.4 67 39
May 31 62.9 49.4 77 42
Weather Station Details
Years Station Coordinates
1939–2022 Half Moon Bay location