Cool
Average highs are around 19°C, so pack for cooler days.
May verdict
Half Moon Bay, California, United States in May
Weather score56Good
Good for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 11h per day, so bright days are a strong part of the month. Rainfall averages 9mm, which is relatively low for holiday planning.
May weather
Monthly averages
Temp
19°C
Rain
9mm
Sun
11h
Sea
12°C
Weather score
56
Good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 9mm, which is relatively low for holiday planning.
Bright
Sunshine averages 11h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 12°C, so the water can feel cool.
Map
Weather map
Compare Half Moon Bay, California, United States with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
May19°C average high
May is close to Half Moon Bay's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to October
This stretch sets the upper range for average daytime heat.
Rain
May9mm average rain
May is one of Half Moon Bay's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsApril to October
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
May11 hours average sun
May is one of Half Moon Bay's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsApril to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May12°C average sea
May is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJuly to October
Sea temperatures are usually near 14°C in this stretch, so swimming comfort is at its strongest.
Weather score
May56 weather score
May scores above Half Moon Bay's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsMay to September
These months have the strongest weather score in the monthly averages.
