Catalina Island is the ultimate summer escape, just an hour from Los Angeles, and August delivers peak beach weather. Expect warm waters, long sunny days, and perfect conditions for snorkeling, kayaking, and boating. But with high demand comes bigger crowds and steeper prices, making it one of the busiest times to visit. Is August the best time to go, or should you hold off for a quieter, more affordable trip? Here is what you need to know before planning your getaway.
August Weather On Catalina Island
August brings weather that can go up to 80F and the warmest water temperatures compared to the other months. It’s also the least cloudy with no rain in August.
The water temperature in August can still be cold so it’s best to grab a wetsuit if you plan to be in the water.
Average Temperature On Catalina Island In August
The average temperature in August is 72°F (22.2°C). Maximum temperatures can reach 80°F (26.6°C) and minimum temperatures can dip to 66°F (18.8°C).
How Sunny Is It On Catalina Island In August
It is very sunny in August with an average of 347 hours of sun throughout the month. Each day has an average of 13.3 hours of daylight.
Does It Rain In August
It rarely rains in August where there is a 0% chance of a rainy day. On a rare day in August that it does rain, there might be 0.0-0.1 inches of precipitation.
How Humid Is Catalina Island In August
Catalina Island is the most humid in August and September compared to the rest of the months. Catalina Island’s humidity comfort level is at 2-3% in August.
How Windy Is Catalina Island In August

It is a bit breezy in August with an average wind speed of 6.9 mph with March and April being the windiest months. The least windy months are July and August.
Is The Water Warm In August

The water is the warmest in August and September compared to the other months. The average water temperature in August is 68°F.
If you plan you get into 68°F water, it’s best to grab a thick wetsuit to keep you warm and cozy in the cold waters.
Frequently Asked Questions
Is August a good time to go to Catalina Island?
August is a great time to visit Catalina Island as the weather is warmer than the other months. It’s especially great if you want to get into the water as it’s the warmest in August and September.
What’s the best time of year to go to Catalina Island?
It’s best to visit Catalina Island during the spring and fall. Temperatures tend to be mild, crowds are gone for the most part, and you can really feel the change in seasons.
Is Catalina Island tap water safe to drink?
Yes, tap water is safe to drink on Catalina Island and meets health standards. It’s best to bring along a reusable water bottle to keep you hydrated throughout the day.
What should I pack for Catalina Island?
Since Catalina Island is an island, make sure you’re packing your beach items among other packing essentials. But since the ocean water will be cold, don’t forget to bring your wetsuit!
Is there an Uber on Catalina island?
There is no Uber or Lyft on Catalina Island. Cars – either your own or a rental – aren’t allowed either. You can explore the island by foot, shuttle bus, renting, or touring in a golf cart.
Final Thoughts
Catalina Island is definitely worth a visit, especially in August when the weather and the water temperature are the warmest. Plus there is a lot of sun on Catalina Island in August so you can sunbathe longer under the island sun.
Not Interested In Catalina Island In August?
If you’re not interested in visiting Catalina Island in August, then check out these posts about visiting Catalina Island during the other months:
- Catalina Island In January
- Catalina Island In February
- Catalina Island In March
- Catalina Island In April
- Catalina Island In May
- Catalina Island In June
- Catalina Island In July
- Catalina Island In August
- Catalina Island In September
- Catalina Island In October
- Catalina Island In November
- Catalina Island In December
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