SeasonMapSanta Cruz, California (Santa Cruz) weather in May
United States
May in Santa Cruz, California: nice, dry, with clean air — a great time to visit.
#6 of 12 months in Santa Cruz, California · #777 of 1383 destinations to visit in May · comfort 79/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Santa Cruz, California in May
Other months in Santa Cruz, California
Santa Cruz's forum calls September one of the warmest and most reliable months — low-70s°F by day, chillier mornings and evenings in the 50s, with the coastal fog that plagues early summer mostly staying offshore. Regulars are consistent that it never gets tropical or humid here, just comfortably warm, making it a favorite pick over the foggier months of June and July.
Add your own note from Santa Cruz, California's card on the map.
Santa Cruz, California climate normals — May
| Daytime high | 21°C / 70°F | 😎 nice |
|---|---|---|
| Nighttime low | 8°C / 47°F | |
| Feels like (high) | 20°C / 68°F | |
| Sea temperature | 13°C / 55°F | 🥶 cold sea |
| Rainfall | 22 mm / 0.9 in | ☀️ dry |
| Rainy days | 3 days | |
| Humidity | 79% | 💦 very humid |
| Dew point | 10°C / 51°F | |
| Sunshine | 12.2 h/day | |
| Daylight | 14.2 h | |
| Wind | 21 km/h / 13 mph | |
| Air quality (US AQI) | 39 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Santa Cruz, California in May
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.
BusyBoardwalk summer season(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Santa Cruz, California'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 weatherSanta Cruz, California's weather peaks July–September.
Best weatherFair weatherToughest weather
What's on in Santa Cruz, California in May
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Season
Summer fog
15 May – 31 Aug · usuallyFog seasonThe marine layer comes in overnight and usually clears by late morning, which is why the beach fills after noon rather than at breakfast. Over the hill in the valley it is twelve degrees warmer. Source ↗
- Season
Boardwalk summer season
23 May – 7 Sep · usuallySummer season opensCrowdedThe old wooden coaster and the rest of the seafront run daily from Memorial Day to Labor Day, with free bands on the beach on summer Friday evenings. Parking is the whole difficulty. Source ↗
Nearby, and something's on
Within 300 km of Santa Cruz, California — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Santa Cruz, California?
Santa Cruz, California in May — FAQ
- Is May a good time to visit Santa Cruz, California?
- May in Santa Cruz, California: nice, dry, with clean air — a great time to visit. It ranks #6 of 12 months for Santa Cruz, California on SeasonMap's comfort score (79/100).
- What is the weather like in Santa Cruz, California in May?
- In May, Santa Cruz, California averages a daily high of 20.9°C and a low of 8.2°C, with about 22.4 mm of rain over roughly 2.6 rainy days.
- What is the air quality in Santa Cruz, California in May?
- Santa Cruz, California has a mean US Air Quality Index of about 39 in May.
Other months in Santa Cruz, California
Compare Santa Cruz, California in May
Warmer or cooler than Santa Cruz, California in May
Similar destinations in North America — May
Within 300 km: Monterey's Gray whale migration around 15 Dec – 10 May, and Big Sur's Coastal wildflowers around 15 Feb – 15 May.