Half Moon Bay weather in June
June in Half Moon Bay: nice, dry, with clean air — an excellent time to visit.
Updated September 2026 · climate normals from ERA5 reanalysis
#4 of 12 months in Half Moon Bay · #672 of 1413 destinations to visit in June · comfort 82/100 (tier A)
- Days
- 19°C
- Nights
- 11°C
- Wet days
- 1
- Sun
- 12.5 h
- Humidity
- 82%
- Daylight
- 15 h
Traveller notes on Half Moon Bay in June
Notes from nearby San Francisco (35 km away)
Half Moon Bay doesn't have its own notes for June yet — these are about San Francisco, close enough to share the season.
San Francisco in June is the city's famous trap: an average high near 22°C, "June gloom" along the coast, and micro-climates sharp enough that Union Square runs noticeably warmer than the waterfront while the Golden Gate Bridge stays cool and breezy whatever the rest of the city is doing. The forum's answer is always the same word — layers. A t-shirt or long sleeves by day, a sweater or jacket by evening, good shoes for the walking; regulars note most people here don't wear shorts or sandals. The one thing June won't hand you is rain: it is among the driest months of the year.
Add your own note from Half Moon Bay's card on the map.
Half Moon Bay climate normals — June
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Half Moon Bay in June
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
BusySummer break in United States, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Half Moon Bay's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherHalf Moon Bay's weather peaks July–September.
Best weatherFair weatherToughest weather
Nearby, and something's on
Within 300 km of Half Moon Bay — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Half Moon Bay?
Half Moon Bay in June — FAQ
- Is June a good time to visit Half Moon Bay?
- June in Half Moon Bay: nice, dry, with clean air — an excellent time to visit. It ranks #4 of 12 months for Half Moon Bay on SeasonMap's comfort score (82/100).
- What is the weather like in Half Moon Bay in June?
- In June, Half Moon Bay averages a daily high of 18.5°C and a low of 10.9°C, with about 3.6 mm of rain over roughly 1 rainy days.
- What is the air quality in Half Moon Bay in June?
- Half Moon Bay has a mean US Air Quality Index of about 48 in June.
Within 300 km: San Francisco's San Francisco Pride on 27–28 Jun, and Yosemite National Park's Waterfalls at full flow around 15 Apr – 15 Jun.