June weather forecastSanta Cruz, CA

June
Weather in June
June marks the start of summer in Santa Cruz and brings sunny weather, extended daylight hours, and increasing warmth. The pleasant climate opens up opportunities for a slew of beach activities, including beach volleyball and sandcastle building. Rainfall hits the lowest point for the year, recording just 0.08" (2mm) of rainfall spread over approximately three rainy days. Clear skies dominate the Santa Cruz horizon, and a reduced cloud percentage of 19% sets the perfect stage for stunning sunsets. The onset of the beach season draws in swimmers and sunbathers, eager to revel in the balmy summer.Temperature
The advent of June observes an average high-temperature of an agreeable 70°F (21.1°C), nearly identical to May's 64.9°F (18.3°C). During June, Santa Cruz records a consistent average nighttime temperature of 51.4°F (10.8°C).Humidity
In June, the average relative humidity is 72%.Rainfall
In Santa Cruz, during June, the rain falls for 2.8 days and regularly aggregates up to 0.08" (2mm) of precipitation. In Santa Cruz, during the entire year, the rain falls for 77.9 days and collects up to 14.45" (367mm) of precipitation.Ocean temperature
In Santa Cruz, the average seawater temperature in June is 54.3°F (12.4°C).Note: Swimming in 54.3°F (12.4°C) is considered life-threatening. Even a few minutes in 55.4°F (13°C) water is uncomfortable, and swimming below 50°F (10°C) may cause total loss of breathing control and cold shock, depending on a person's physique.
Daylight
With an average of 14h and 42min of daylight, June has the longest days of the year in Santa Cruz.On the first day of the month, sunrise is at 5:49 am and sunset at 8:22 pm. On the last day of June, in Santa Cruz, sunrise is at 5:52 am and sunset at 8:31 pm PDT.
Sunshine
In Santa Cruz, the average sunshine in June is 11.5h.UV index
The months with the highest UV index are June through September, with an average maximum UV index of 5. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.Note: An average maximum UV index of 5 in June leads to these recommendations:
Be careful. Light complexion individuals might get burns in fewer than 30 minutes. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in June
Santa Cruz, CA
- Average high temperature in June: 70°F
The warmest months (with the highest average high temperature) are August and September (73°F).
The month with the lowest average high temperature is December (57.2°F).
- Average low temperature in June: 51.4°F
The month with the highest average low temperature is September (55.2°F).
The coldest month (with the lowest average low temperature) is February (45.5°F).
Average pressure in June
Santa Cruz, CA
- Average pressure in June: 29.93"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is September (29.92"Hg).
Average wind speed in June
Santa Cruz, CA
- Average wind speed in June: 6.8mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in June
Santa Cruz, CA
- Average humidity in June: 72%
The month with the highest relative humidity is March (75%).
The month with the lowest relative humidity is October (68%).
Average rainfall in June
Santa Cruz, CA
- Average rainfall in June: 0.08"
The wettest month (with the highest rainfall) is December (2.8").
The driest months (with the least rainfall) are July and August (0.04").
Average rainfall days in June
Santa Cruz, CA
- Average rainfall days in June: 2.8 days
The month with the highest number of rainy days is March (13.4 days).
The month with the least rainy days is August (1.2 days).
Average sea temperature in June
Santa Cruz, CA
- Average sea temperature in June: 54.4°F
The best month for swimming (with the highest average sea temperature) is September (58.2°F).
The coldest month (with the lowest average sea temperature) is April (53.9°F).
Average daylight in June /
Average sunshine in June
Santa Cruz, CA
- Average daylight in June: 14h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in June: 11h and 30min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 5h and 48min).
Average sunshine days in June
Santa Cruz, CA
- Average sunshine days in June: 25.3 days
The month with the most sunshine days is August (27.8 days).
The month with the least sunshine days is March (16.4 days).
Average UV index in June
Santa Cruz, CA
- Average UV index in June: 5
The months with the highest UV index are June, July, August and September (UV index 5).
The months with the lowest UV index are February and November (UV index 3).
Average cloud cover in June
Santa Cruz, CA
- Average cloud cover in June: 19
The month with the most cloud cover is March (Cloud cover 38).
The months with the least cloud cover are July and September (Cloud cover 15).
Average visibility in June
Santa Cruz, CA
- Average visibility in June: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





