San Diego weather in June
In June, San Diego has daytime highs averaging 22 °C, nights around 15 °C, with 0.4 wet days, and a sea temperature of 19 °C. Figures are 1991–2020 climate normals.
- 22.1°C Average high
- 15.1°C Average low
- 0.4days Wet days
- 2mm Rainfall
- 18.6°C Sea temperature
- 14h Daylight
Daily temperatures through June
How June develops
Averages for the first, middle and last part of the month, from daily 1991–2020 normals. Chance of rain is the share of years in which that calendar day recorded more than 1 mm.
| Days | Avg high | Avg low | Chance of rain |
|---|---|---|---|
| 1–10 June | 21.2 °C | 14.5 °C | 2 % |
| 11–20 June | 21.9 °C | 14.9 °C | 1 % |
| 21–30 June | 23.1 °C | 15.7 °C | 1 % |
- Average highs rise from 21.2 °C early in June to 23.1 °C by the end of it.
What to expect
| Measure | Typical June | Share of the month |
|---|---|---|
| Days above 25 °C | 3.1 of 30 | 10 % |
| Days above 30 °C | 0.3 of 30 | 1 % |
| Days below 0 °C | 0 of 30 | 0 % |
| Days with more than 1 mm rain | 0.4 of 30 | 1 % |
Conditions in June
| Measure | Average |
|---|---|
| Mean temperature | 18 °C |
| Record high (1991–2020) | 33 °C |
| Record low (1991–2020) | 11 °C |
| Relative humidity | 77 % |
| Wind speed | 15 km/h |
| Cloud cover | 36 % |
Where San Diego ranks in June
| Ranking | Position | Value |
|---|---|---|
| Places with the best weather in North America in June | 4thof 50 | 95/100 |
| The driest places in North America in June | 15thof 50 | 2.0 mm |
| The coolest places in North America in June | 30thof 50 | 22 °C |
June compared with the months around it
| Month | Avg high | Rainfall | Cloud |
|---|---|---|---|
| April | 19.5 °C | 24 mm | 44 % |
| May | 20.4 °C | 10 mm | 47 % |
| June | 22.1 °C | 2 mm | 36 % |
| July | 24.4 °C | 2 mm | 33 % |
| August | 25.5 °C | 2 mm | 28 % |
See all twelve months for San Diego
- June is the 5th warmest month here.
- It is the 1st driest month of the year.
- It ranks 5th for least cloud cover.
- Days last about 14 hours from sunrise to sunset.
- It rains on 0.4 of 30 days — 1 % of the month.
- Nights are about 7.0 °C cooler than the middle of the day.
- The hottest June day on record since 1991 reached 33 °C, 11 °C above the usual daytime high.
- Beach score: 70 / 100 — see how this is calculated.
Nearby destinations in June
| Destination | Avg high | Wet days | Sea |
|---|---|---|---|
| San Diego | 22 °C | 0.4 | 19 |
| Tijuana | 22 °C | 0 | 19 |
| Escondido | 25 °C | 1 | 19 |
| Oceanside | 22 °C | 1 | 19 |
| Ensenada | 24 °C | 0 | 18 |
QuestionsJune in San Diego, answered
How warm is San Diego in June?
Daily highs average 22 °C and nights fall to about 15 °C, a spread of 7.0 °C between afternoon and dawn. That makes June the 5th warmest month of the year here.
Does it rain much in San Diego in June?
June averages 2 mm of rain, spread over about 0 of the 30 days — 1 % of the month. Cloud cover averages 36 % of the sky.
Is the sea warm enough to swim in June?
The sea averages 19 °C off San Diego in June. Most people find water below 20 °C bracing and above 25 °C comfortable for a long swim; this figure is a monthly surface average, so a sheltered bay on a still afternoon can be warmer.
How long are the days in June?
San Diego averages 14 hours between sunrise and sunset in June. Day length is computed from latitude and date, so it is exact rather than modelled — but it says nothing about how much of that time is sunny.
Data sources and method
- ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
- Open-Meteo — Open-Meteo.com. CC BY 4.0
- NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
- GeoNames — GeoNames.org. CC BY 4.0
- Normal period
- 1991–2020
- Dataset version
- era5-1991-2020-scores1.1
- Last processed
Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: daylight hours, beach and comfort scores, monthly rankings, threshold day counts, chance of a wet day by date, ten-day averages within the month. Full formulas are on the methodology page.
Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.