Thousand Oaks climate
Thousand Oaks (California, United States) has a warm-summer Mediterranean climate (Köppen Csb). The average temperature over the year is 17 °C62 °F, and about 402 mm16 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Thousand Oaks climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 1762 | 948 | 1355 | 963.8 |
| Feb | 1762 | 948 | 1355 | 853.4 |
| Mar | 1864 | 1050 | 1457 | 582.3 |
| Apr | 1966 | 1151 | 1559 | 210.8 |
| May | 2169 | 1254 | 1662 | 100.4 |
| Jun | 2272 | 1457 | 1865 | 10.0 |
| Jul | 2476 | 1762 | 2069 | 10.1 |
| Aug | 2578 | 1763 | 2170 | 00.0 |
| Sep | 2678 | 1763 | 2171 | 30.1 |
| Oct | 2374 | 1559 | 1967 | 190.7 |
| Nov | 2068 | 1253 | 1661 | 301.2 |
| Dec | 1762 | 948 | 1355 | 753.0 |
| Year | 2678 | 948 | 1762 | 40216 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 64% | 42% | 3.2 | 10:06 |
| Feb | 67% | 42% | 4.0 | 10:55 |
| Mar | 68% | 40% | 5.4 | 11:53 |
| Apr | 68% | 35% | 6.6 | 12:00 |
| May | 69% | 29% | 7.5 | 13:56 |
| Jun | 69% | 21% | 8.1 | 14:25 |
| Jul | 67% | 17% | 7.9 | 14:13 |
| Aug | 64% | 14% | 7.4 | 13:25 |
| Sep | 60% | 17% | 6.3 | 12:20 |
| Oct | 60% | 25% | 4.8 | 11:15 |
| Nov | 59% | 33% | 3.6 | 10:20 |
| Dec | 63% | 42% | 2.9 | 9:53 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Thousand Oaks is like
The warmest month is September, with an average high of 26 °C78 °F and a low of 17 °C63 °F. The coldest is December, when highs average 17 °C62 °F and lows 9 °C48 °F. There is a clear seasonal cycle, with 8.6 °C15.4 °F between the average temperature of the warmest and the coolest month.
Annual precipitation is moderate at about 402 mm16 in. The wettest three-month stretch is December–February, which brings 64% of the annual total. Months with less than 20 mm0.8 in on average: May–October. The wettest month is January (96 mm3.8 in), the driest is August (0 mm0.0 in).
Relative humidity ranges from 59% in November to 69% in June. The clearest skies (lowest average cloud amount, 14%) are typical of August. Average wind speed near the ground ranges from 7 km/h (4 mph) in August to 11 km/h (7 mph) in December. Daylight lasts from about 9.9 hours in December to 14.4 hours in June.
Best time to visit Thousand Oaks
Based on these averages, the most comfortable months for sightseeing and outdoor activities are March–November: average highs of 18 °C64 °F to 26 °C78 °F with 0 mm0.0 in to 58 mm2.3 in of precipitation per month.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Thousand Oaks
- Winter (December–February) — highs around 17 °C62 °F, lows around 9 °C48 °F, about 86 mm3.4 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
- Spring (March–May) — highs 1864 to 21 °C69 °F, lows 1050 to 12 °C54 °F, about 30 mm1.2 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Summer (June–August) — highs 2272 to 25 °C78 °F, lows 1457 to 17 °C63 °F, about 1 mm0.0 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses.
- Autumn (September–November) — highs 2068 to 26 °C78 °F, lows 1253 to 17 °C63 °F, about 17 mm0.7 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
How Thousand Oaks compares
Compared with Oxnard, about 31 km to the west, Thousand Oaks has practically the same average temperature and receives 5% less precipitation (402 mm16 in vs 424 mm17 in). The difference is largest in December (2 °C3.6 °F cooler).
Of the 222 places in the United States covered by World Climates, Thousand Oaks is the 86th warmest by annual mean temperature and the 190th wettest by annual precipitation. See all of them on the United States climate page.
Places in other countries with the most similar temperature and rainfall pattern (seasons shifted for the other hemisphere where needed): Al Bayda (Libya, BSk), Viña del Mar (Chile, BSh) and Jerusalem (Israel, Csa).
Nearby places
- Oxnard 31 km · 17 °C62 °F · 424 mm17 in
- Santa Clarita 37 km · 19 °C66 °F · 341 mm13 in
- Los Angeles 56 km · 19 °C67 °F · 331 mm13 in
- Long Beach 75 km · 20 °C68 °F · 331 mm13 in
- West Covina 83 km · 19 °C67 °F · 331 mm13 in
- Lancaster 87 km · 17 °C63 °F · 286 mm11 in
- Anaheim 93 km · 20 °C67 °F · 331 mm13 in
- Santa Ana 101 km · 17 °C63 °F · 311 mm12 in
Frequently asked questions
What is the warmest month in Thousand Oaks?
September is the warmest month in Thousand Oaks, with an average high of 26 °C (78 °F) and an average low of 17 °C (63 °F).
What is the coldest month in Thousand Oaks?
December is the coldest month, with an average high of 17 °C (62 °F) and an average low of 9 °C (48 °F).
When does it rain the most in Thousand Oaks?
January is the wettest month with about 96 mm (3.8 in) of precipitation; August is the driest with about 0 mm (0.0 in).
What is the best time to visit Thousand Oaks?
Judging by long-term averages, the most comfortable months are March–November.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 183 m, while Thousand Oaks lies at about 270 m. Temperatures on this page were therefore adjusted by −0.6 °C1 °F using the standard lapse rate of 6.5 °C per 1,000 m.