San Diego
California, USA
Long-term weather forecast
Long-term weather forecast

June weather forecast and climate
San Diego, CA

The view of Coronado Island in San Diego, California, from across a water body on a sidewalk, with a row of palm trees
The view of Coronado Island in San Diego, California, from across a water body on a sidewalk, with a row of palm trees
June, the first month of the summer, in San Diego, is a pleasant month, with average temperature varying between 58.8°F (14.9°C) and 70.7°F (21.5°C).

Temperature

In San Diego, the average high-temperature is practically the same as in May - a pleasant 70.7°F (21.5°C). The average low-temperature, in San Diego, is 58.8°F (14.9°C).

Humidity

The most humid month in San Diego is June, with an average relative humidity of 73%.

Rainfall

June is the month with the least rainfall. Rain falls for 2.7 days and accumulates 0.12" (3mm) of precipitation.

Ocean temperature

In San Diego, the average water temperature is 64.8°F (18.2°C).
Note: For swimming, a surface water temperature of 64.8°F (18.2°C) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 69.8°F (21°C).

Daylight

The month with the longest days is June, with an average of 14.3h of daylight.

Sunshine

In June, the average sunshine is 11.8h.

UV index

In San Diego, the average daily maximum UV index is 5. A UV Index estimate of 3 to 5 represents a moderate threat to health from unsafe exposure to the UV radiation for average individuals.
Note: The average daily UV index of 5 in June transform into the following instructions:
Take precautions - Protection against sunburn is recommended. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What is the temperature in June in San Diego?

In San Diego, California, in June, the average high-temperature is 70.7°F (21.5°C), and the average low-temperature is 58.8°F (14.9°C).

What is the most humid month in San Diego?

The most humid month in San Diego, California, is June, with an average relative humidity of 73%.

What is the average humidity in June in San Diego?

In San Diego, the average relative humidity in June is 73%.

How much does it rain in San Diego in June?

In June, in San Diego, the rain falls for 2.7 days. Throughout June, 0.12" (3mm) of precipitation is accumulated.

What is the driest month in San Diego?

The month with the least rainfall is June when the rain falls for 2.7 days and typically collects 0.12" (3mm) of precipitation.

What is the ocean temperature in June in San Diego?

In San Diego, California, the average seawater temperature in June is 64.8°F (18.2°C). Swimming in 64.8°F (18.2°C) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 69.8°F (21°C).

When are the longest days in San Diego?

The month with the longest days in San Diego is June, with an average of 14.3h of daylight.

What is the average length of the day in June in San Diego?

In June, the average length of the day in San Diego is 14.3h.

How long on average sun shines in June in San Diego?

In June, the average sunshine in San Diego, California, is 11.8h.

How high is the UV index in June in San Diego?

In June, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unsafe exposure to the Sun's UV rays.
Average temperature in June - San Diego, CA
  • Average high temperature in June: 70.7°F

The warmest month (with the highest average high temperature) is August (77.4°F).
The month with the lowest average high temperature is February (63.1°F).

  • Average low temperature in June: 58.8°F

The month with the highest average low temperature is August (65.7°F).
The coldest month (with the lowest average low temperature) is February (51.8°F).

Average humidity in June - San Diego, CA
  • Average humidity in June: 73%

The month with the highest relative humidity is June (73%).
The month with the lowest relative humidity is November (59%).

Average rainfall in June - San Diego, CA
  • Average rainfall in June: 0.12"

The wettest month (with the highest rainfall) is December (1.65").
The driest month (with the lowest rainfall) is June (0.12").

Average rainfall days in June - San Diego, CA
  • Average rainfall days in June: 2.7 days

The month with the highest number of rainy days is March (7.6 days).
The month with the lowest number of rainy days is June (2.7 days).

Average sea temperature in June - San Diego, CA
  • Average sea temperature in June: 64.7°F

The best month for swimming (with the highest average sea temperature) is August (67.9°F).
The coldest month (with the lowest average sea temperature) is February (58.7°F).

Average daylight in June / Average sunshine in June - San Diego, CA
  • Average daylight in June: 14.3h

The month with the longest days is June (Average daylight: 14.3h).
The month with shortest days is December (Average daylight: 10h).

  • Average sunshine in June: 11.8h

Months with most sunshine are July and August (Average sunshine: 11.9h).
The month with least sunshine is December (Average sunshine: 6.7h).

Average UV index in June - San Diego, CA
  • Average UV index in June: 5

Months with the highest UV index are July, August and September (UV index 6).
Months with the lowest UV index are January, February, March, November and December (UV index 4).