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San Francisco, USA · Temperate oceanic

San Francisco in June: go or not?

Excellent time. San Francisco in June scores 8.2/10.

📅 Updated August 2026 🛰️ ERA5 · 10 years 📍 37.77°N · 122.42°W
⚡ This month's verdict
Go for it
San Francisco · June
8.2
12–18°
Temperature
1%
Rain
10h
Sun
🌊 Seaside☀️ Bright🍴 Gastronomy
Photo : Will Truettner via Unsplash
The month in detail

What to expect in June

In June, San Francisco sees 18.0°F during the day with 10.4h of sunshine per day. Rain is virtually absent (1.0% of days) — ideal for planning without a backup. A good balance between weather and crowds, even if August (8.3/10) remains theoretically better.

June ranks 3 out of 12 months in San Francisco. Compared to May: +4°F daytime, 7 pts fewer rainy days.

This month's conditions

What it's like in June

UV index
8 · very high
protection essential
Feels like
comfortable
11°
Sea
15°C
cold, for the brave
Daylight
14.6h of daylight
Air quality
good
AQI 23
Compare

Is June the right month?

The best month in San Francisco is August (8.3/10), 0.1 pt higher than June.

See August →See all 12 months →
Context

Our verdict

San Francisco plays on the cool of its microclimate: California Current + Pacific = 54-72°F all year. June-September are my favorite months (8.3-8.4/10): 54-66°F, 0-4% rain.

Read Gilles' full review →

Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

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Stay
Hotels & rentals · San Francisco
Expedia →
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Activities
Tours, tickets, experiences
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Flights
Multi-airline comparator
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🎟️ Activities & tours · San Francisco

GetYourGuide selection · free cancellation

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Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach trip.

Country · USA

🗣️LanguageEnglish
💶CurrencyUS Dollar ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘExpensive · 4/5

🌡️ Climate

🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthSeptember · 68°F
❄️Coolest monthDecember · 55°F
🌧️Rainiest month ⓘMarch · 36%

🏖️ Beach trip

📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore

Other destinations in June

If June doesn't convince you for this destination, compare with others.

Similar climate
MontereyUnited StatesBeirutLebanonSamosGreecePaphosCyprusKosGreece
Nearby
Napa ValleyUnited States82 kmLake TahoeUnited States255 kmMammoth MountainUnited States304 kmSanta BarbaraUnited States445 km
Other top picks
El HierroSpain8.2PeruPeru8.2TofoMozambique8.1LanzaroteSpain8.3JohannesburgSouth Africa8.0
← MayJuly →
🗺️ See all 754 destinations on the map
Location

Where is San Francisco ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
USA
Temperate oceanic climate with a 8.3 → 4.2 gap between best and worst month. 10 years of ERA5 data to choose by project.
37.77°N · 122.42°W
Questions

Frequently asked questions

What is the best time to visit San Francisco?
September is the best month with 68°F highs, 57°F lows, 9.0h of sunshine and 4.0% rainy days. The months of September & June offer comparable conditions.
How many hours of sunshine does San Francisco get in September?
San Francisco averages 9.0 sunshine hours per day in September. It is the sunniest month with a climate score of 7.8/10.
What is the rainiest month in San Francisco?
January is the most unfavourable month with January has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in San Francisco in September?
In September, overnight lows reach 57°F, while afternoon highs average 68°F.
Is San Francisco good in winter?
In winter (December-February), San Francisco scores 4.1/10 on average — Difficult period — prefer the peak season.. The best month overall remains September with a score of 7.8/10.
When should you avoid San Francisco?
January is the most difficult month to visit San Francisco, with January has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in San Francisco in June?
In June, the sea averages 60°F in San Francisco: cold, for the brave. Best left to hardened swimmers or those with a wetsuit.
Do you need sun protection in San Francisco in June?
The average UV index reaches 8 in June in San Francisco (very high), with about 14.6h of daylight. Protection essential.