Historical weather data, all-time temperature records, and monthly climate averages for Isla Vista, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5th in Isla Vista runs mild and mostly dry — historically, expect a high around 67° with just a 15% chance of rain. The date has its wild side, though: 1989 brought a scorching 96° high, nearly 30 degrees above average.
Isla Vista's weather is famously tame, but the extremes on record tell a different story. The mercury has touched 109° (June 1990) and bottomed out at 20° (December 1990) — remarkably, both records belong to the same year. The wettest single day on record dropped 5.23 inches in March 2011.
Isla Vista's monthly highs span just 12 degrees all year — from 63° in early January to 76° in late August — making it one of the most stable climates in the country. If you're chasing warmth, aim for late August through September; if you want to avoid rain, skip February, when weekly totals can approach an inch.