June is one of the warmer months of the year in San Francisco, with average highs near 21.8°C and lows around 11.1°C (mean 16.5°C). It is one of the drier months, averaging 6 mm of rainfall and 73% relative humidity across the period.
June is one of the warmer months of the year in San Francisco. Across 45 years of records, the warmest June in San Francisco was 1981 — when the month averaged 18.8°C — while the coldest was 1982 at 14.7°C. Typical June days reach 21.8°C with nights near 11.1°C. The long-term June temperature trend is broadly flat.
June is one of the drier months in San Francisco, averaging 6 mm of rainfall. The wettest June on record was 2011 with 43 mm, while the driest were 1981, 2003 and 2008 at 0 mm.
Relative humidity in San Francisco during June averages 73%. The most humid June was 2006 at 83%, and the least humid was 1981 at 60%.
June receives about 7.1 kWh/m²/day of solar energy in San Francisco. The sunniest June was 2001 at 8 kWh/m²/day, and the cloudiest was 1998 at 6.2.
Average wind speed in San Francisco during June is 2.5 m/s. The windiest Junes were 2021 and 2025 at 2.9 m/s, while the calmest were 1996 and 2006 at 2.1 m/s.
Ranked against the other 11 months using 1981–2025 averages.
| Metric | 1980s | 1990s | 2000s | 2010s | 2020s | Change |
|---|---|---|---|---|---|---|
| Avg Temp | 16.7°C | 16.3°C | 16.2°C | 16.5°C | 16.8°C | +0.1°C |
| Avg High | 22.4°C | 21.8°C | 21.4°C | 21.7°C | 22.0°C | -0.4°C |
| Avg Low | 11.1°C | 10.9°C | 11.0°C | 11.3°C | 11.6°C | +0.5°C |
| Avg Rain | 4 mm | 8 mm | 5 mm | 9 mm | 2 mm | -2 mm |
June temperatures in San Francisco have stayed relatively stable across the record.
June has ranged from a record low of 6.8°C (1999) to a record high of 35.6°C (2000).
Rainfall in June is one of the drier months, averaging 6 mm, with a wettest year of 43 mm.
Daytime highs and overnight lows have shifted differently — highs fell about 0.1°C per decade while lows rose 0.1°C per decade, narrowing the gap between day and night.
One of the best times to visit San Francisco
June is one of the best times to visit San Francisco. Expect days averaging 21.8°C and nights around 11.1°C (mean 16.5°C) — warmer than San Francisco's yearly average — with low rainfall (6 mm), so conditions are generally comfortable for sightseeing and outdoor plans.
| Year | Avg High | Avg Temp | Avg Low | Hottest Day | Coldest Day | Rainfall | Humidity | Wind | Solar |
|---|---|---|---|---|---|---|---|---|---|
| 2025 | 20.9°C | 15.9°C | 10.9°C | 24.8°C | 9.9°C | 1 mm | 73% | 2.9 m/s | 7.1 |
| 2024 | 22.7°C | 17.0°C | 11.3°C | 28.4°C | 10.0°C | 1 mm | 70% | 2.7 m/s | 7.5 |
| 2023 | 19.3°C | 15.2°C | 11.0°C | 24.8°C | 9.0°C | 1 mm | 81% | 2.6 m/s | 6.3 |
| 2022 | 23.1°C | 17.7°C | 12.3°C | 33.9°C | 10.1°C | 6 mm | 67% | 2.8 m/s | 7.5 |
| 2021 | 22.3°C | 17.0°C | 11.8°C | 29.4°C | 9.5°C | 1 mm | 70% | 2.9 m/s | 7.4 |
| 2020 | 23.5°C | 18.0°C | 12.4°C | 29.9°C | 10.1°C | 2 mm | 67% | 2.8 m/s | 7.7 |
| 2019 | 22.9°C | 17.5°C | 12.2°C | 32.9°C | 9.2°C | 1 mm | 73% | 2.4 m/s | 7.3 |
| 2018 | 22.5°C | 17.0°C | 11.4°C | 31.4°C | 9.0°C | 1 mm | 71% | 2.8 m/s | 7.7 |
| 2017 | 21.3°C | 16.4°C | 11.5°C | 32.0°C | 9.1°C | 5 mm | 78% | 2.6 m/s | 7.3 |
| 2016 | 22.5°C | 17.1°C | 11.6°C | 29.0°C | 10.2°C | 2 mm | 71% | 2.6 m/s | 7.3 |
| 2015 | 21.7°C | 16.7°C | 11.7°C | 29.7°C | 10.1°C | 5 mm | 76% | 2.3 m/s | 6.8 |
| 2014 | 22.9°C | 17.0°C | 11.2°C | 33.2°C | 9.3°C | 2 mm | 69% | 2.5 m/s | 7.2 |
| 2013 | 22.1°C | 16.8°C | 11.6°C | 29.6°C | 9.4°C | 23 mm | 73% | 2.6 m/s | 7 |
| 2012 | 21.3°C | 15.9°C | 10.5°C | 30.6°C | 7.6°C | 3 mm | 71% | 2.7 m/s | 7.8 |
| 2011 🌧️ | 19.6°C | 15.0°C | 10.5°C | 29.4°C | 8.2°C | 43 mm | 81% | 2.4 m/s | 6.7 |
| 2010 | 20.6°C | 15.7°C | 10.9°C | 26.9°C | 8.7°C | 1 mm | 78% | 2.5 m/s | 7.4 |
| 2009 | 20.9°C | 16.2°C | 11.5°C | 29.2°C | 10.2°C | 3 mm | 76% | 2.4 m/s | 6.8 |
| 2008 | 22.7°C | 16.5°C | 10.4°C | 34.0°C | 8.3°C | 0 mm | 65% | 2.5 m/s | 7.5 |
| 2007 | 21.2°C | 15.8°C | 10.4°C | 31.3°C | 8.7°C | 2 mm | 72% | 2.6 m/s | 7.6 |
| 2006 | 20.7°C | 16.1°C | 11.5°C | 27.2°C | 9.8°C | 1 mm | 83% | 2.1 m/s | 6.9 |
| 2005 | 19.5°C | 15.0°C | 10.6°C | 24.5°C | 8.1°C | 22 mm | 81% | 2.3 m/s | 7.3 |
| 2004 | 21.3°C | 16.2°C | 11.1°C | 28.8°C | 9.6°C | 1 mm | 75% | 2.7 m/s | 7.3 |
| 2003 | 21.6°C | 16.4°C | 11.3°C | 34.3°C | 9.4°C | 0 mm | 76% | 2.3 m/s | 6.9 |
| 2002 | 21.4°C | 16.0°C | 10.6°C | 28.2°C | 9.0°C | 1 mm | 72% | 2.7 m/s | 7.1 |
| 2001 | 22.7°C | 16.8°C | 10.9°C | 28.9°C | 8.7°C | 5 mm | 66% | 2.6 m/s | 8 |
| 2000 | 22.1°C | 16.7°C | 11.3°C | 35.6°C | 9.1°C | 16 mm | 75% | 2.3 m/s | 6.6 |
| 1999 | 21.2°C | 15.5°C | 9.7°C | 27.5°C | 6.8°C | 3 mm | 72% | 2.5 m/s | 7.2 |
| 1998 | 19.8°C | 15.7°C | 11.5°C | 26.7°C | 10.0°C | 3 mm | 83% | 2.3 m/s | 6.2 |
| 1997 | 22.5°C | 17.0°C | 11.6°C | 27.0°C | 9.4°C | 8 mm | 71% | 2.6 m/s | 7.6 |
| 1996 | 22.2°C | 16.4°C | 10.5°C | 30.2°C | 8.8°C | 1 mm | 74% | 2.1 m/s | 7.7 |
| 1995 | 20.1°C | 15.3°C | 10.5°C | 30.2°C | 7.4°C | 23 mm | 80% | 2.2 m/s | 7.1 |
| 1994 | 22.6°C | 16.4°C | 10.2°C | 32.1°C | 8.7°C | 4 mm | 67% | 2.4 m/s | 7.7 |
| 1993 | 22.9°C | 17.3°C | 11.8°C | 31.8°C | 8.7°C | 17 mm | 72% | 2.4 m/s | 7.7 |
| 1992 | 21.9°C | 16.8°C | 11.7°C | 28.9°C | 9.5°C | 15 mm | 76% | 2.2 m/s | 6.3 |
| 1991 | 21.9°C | 16.0°C | 10.1°C | 27.8°C | 7.9°C | 9 mm | 70% | 2.3 m/s | 6.5 |
| 1990 | 22.5°C | 16.7°C | 10.9°C | 30.5°C | 8.7°C | 1 mm | 72% | 2.5 m/s | 7.3 |
| 1989 | 22.4°C | 16.8°C | 11.2°C | 32.4°C | 9.9°C | 5 mm | 70% | 2.4 m/s | 6.6 |
| 1988 | 22.4°C | 16.8°C | 11.2°C | 30.1°C | 7.8°C | 11 mm | 70% | 2.3 m/s | 6.7 |
| 1987 | 22.4°C | 16.6°C | 10.8°C | 29.9°C | 9.0°C | 2 mm | 67% | 2.3 m/s | 6.3 |
| 1986 | 22.0°C | 16.7°C | 11.3°C | 29.9°C | 10.0°C | 1 mm | 73% | 2.2 m/s | 6.7 |
| 1985 | 23.9°C | 17.9°C | 11.8°C | 30.9°C | 8.5°C | 3 mm | 66% | 2.2 m/s | 6.7 |
| 1984 | 22.6°C | 16.5°C | 10.4°C | 27.5°C | 8.8°C | 7 mm | 67% | 2.5 m/s | 6.8 |
| 1983 | 21.0°C | 15.9°C | 10.7°C | 25.2°C | 9.1°C | 2 mm | 79% | 2.5 m/s | — |
| 1982 ❄️ | 19.2°C | 14.7°C | 10.1°C | 23.5°C | 7.5°C | 5 mm | 80% | 2.4 m/s | — |
| 1981 🔥 | 25.3°C | 18.8°C | 12.4°C | 32.5°C | 9.1°C | 0 mm | 60% | 2.7 m/s | — |
Actual recorded June data for each year, 1981–2025 — sourced from NASA POWER.
The average high in June is around 21.8°C with lows near 11.1°C (mean 16.5°C), based on 45 years of NASA POWER data.
June averages 6 mm of rainfall in San Francisco, one of the drier months. The wettest on record was 43 mm in 2011.
The hottest June reached 35.6°C in 2000. The coldest dipped to 6.8°C in 1999.
Comparing the earliest years on record (1981–1985) with the most recent (2021–2025), average June temperatures have fallen by about 0.2°C — but days and nights have moved in opposite directions. Overnight lows rose from 11.1°C to 11.5°C while daytime highs eased from 22.4°C to 21.7°C, narrowing the gap between day and night.
June is one of the warmer months of the year in San Francisco and one of the drier months, so plan for around 21.8°C daytime highs and 11.1°C at night.
Not quite — June is the 8th coolest month in San Francisco, averaging 16.5°C.
For June in San Francisco, pack light layers you can adjust through the day, with typical highs of 21.8°C and lows of 11.1°C.
Relative humidity in June averages 73% — moderately humid.
Average wind speed in June is 2.5 m/s. The windiest June on record averaged 2.9 m/s (2021).
The wettest June on record was 2011 with 43 mm. On average, June sees 6 mm.
All figures are derived from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis, covering 1981–2025.
Explore how the weather in San Francisco behaves each June, based on 45 years of NASA POWER climate data from 1981 to 2025. This page breaks down average temperatures, rainfall, humidity, wind and solar radiation for June specifically, along with year-by-year records and how the month has changed over the decades.
