Long Beach climate
Long Beach (California, United States) has a hot semi-arid climate (Köppen BSh). The average temperature over the year is 20 °C68 °F, and about 331 mm13 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Long Beach climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 2068 | 949 | 1558 | 732.9 |
| Feb | 2068 | 949 | 1558 | 753.0 |
| Mar | 2271 | 1151 | 1661 | 421.7 |
| Apr | 2374 | 1253 | 1864 | 190.7 |
| May | 2679 | 1457 | 2068 | 90.3 |
| Jun | 2984 | 1762 | 2373 | 10.0 |
| Jul | 3290 | 2068 | 2679 | 20.1 |
| Aug | 3391 | 2068 | 2680 | 10.0 |
| Sep | 3289 | 1967 | 2678 | 30.1 |
| Oct | 2882 | 1661 | 2272 | 170.7 |
| Nov | 2474 | 1254 | 1864 | 251.0 |
| Dec | 1967 | 949 | 1458 | 652.6 |
| Year | 3391 | 949 | 2068 | 33113 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 59% | 52% | 3.1 | 10:08 |
| Feb | 63% | 54% | 4.0 | 10:56 |
| Mar | 64% | 56% | 5.2 | 11:53 |
| Apr | 63% | 52% | 6.3 | 12:59 |
| May | 62% | 59% | 6.6 | 13:54 |
| Jun | 57% | 68% | 6.3 | 14:23 |
| Jul | 52% | 63% | 6.6 | 14:11 |
| Aug | 49% | 55% | 6.3 | 13:24 |
| Sep | 50% | 48% | 5.5 | 12:20 |
| Oct | 52% | 48% | 4.3 | 11:16 |
| Nov | 52% | 48% | 3.4 | 10:21 |
| Dec | 58% | 52% | 2.8 | 9:55 |
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 Long Beach is like
The warmest month is August, with an average high of 33 °C91 °F and a low of 20 °C68 °F. The coldest is December, when highs average 19 °C67 °F and lows 9 °C49 °F. There is a clear seasonal cycle, with 12.1 °C21.8 °F between the average temperature of the warmest and the coolest month.
It is dry, with about 331 mm13 in of precipitation per year. 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: April–October. The wettest month is February (75 mm3.0 in), the driest is June (1 mm0.0 in).
Relative humidity ranges from 49% in August to 64% in March. The clearest skies (lowest average cloud amount, 48%) are typical of October. Average wind speed near the ground ranges from 6 km/h (4 mph) in August to 8 km/h (5 mph) in January. Daylight lasts from about 9.9 hours in December to 14.4 hours in June.
Best time to visit Long Beach
Based on these averages, the most comfortable months for sightseeing and outdoor activities are October–June: average highs of 19 °C67 °F to 29 °C84 °F with 1 mm0.0 in to 75 mm3.0 in of precipitation per month.
The most challenging month is August, which is hot, with average highs of 33 °C91 °F.
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 Long Beach
- Winter (December–February) — highs 1967 to 20 °C68 °F, lows around 9 °C49 °F, about 71 mm2.8 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Spring (March–May) — highs 2271 to 26 °C79 °F, lows 1151 to 14 °C57 °F, about 23 mm0.9 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2984 to 33 °C91 °F, lows 1762 to 20 °C68 °F, about 1 mm0.0 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 2474 to 32 °C89 °F, lows 1254 to 19 °C67 °F, about 15 mm0.6 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and an extra layer for the cooler mornings and evenings.
How Long Beach compares
Compared with Los Angeles, about 32 km to the north, Long Beach is on average 0.5 °C0.9 °F warmer and receives a similar amount of precipitation. The difference is largest in February (0.5 °C0.9 °F warmer).
Of the 222 places in the United States covered by World Climates, Long Beach is the 35th warmest by annual mean temperature and the 196th 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: Netanya (Israel, Csa), Haifa (Israel, Csa) and Limassol (Cyprus, BSh).
The same NASA POWER grid cell also contains Torrance (pop. 143,592), Downey (pop. 114,219), Inglewood (pop. 111,666) and Norwalk (pop. 107,140). Their long-term averages in this dataset are essentially the same as for Long Beach, so they do not have separate pages.
Nearby places
- Anaheim 26 km · 20 °C67 °F · 331 mm13 in
- Santa Ana 30 km · 17 °C63 °F · 311 mm12 in
- Los Angeles 32 km · 19 °C67 °F · 331 mm13 in
- West Covina 41 km · 19 °C67 °F · 331 mm13 in
- Thousand Oaks 75 km · 17 °C62 °F · 402 mm16 in
- Riverside 76 km · 20 °C68 °F · 289 mm11 in
- Santa Clarita 77 km · 19 °C66 °F · 341 mm13 in
- San Bernardino 91 km · 19 °C67 °F · 289 mm11 in
Frequently asked questions
What is the warmest month in Long Beach?
August is the warmest month in Long Beach, with an average high of 33 °C (91 °F) and an average low of 20 °C (68 °F).
What is the coldest month in Long Beach?
December is the coldest month, with an average high of 19 °C (67 °F) and an average low of 9 °C (49 °F).
When does it rain the most in Long Beach?
February is the wettest month with about 75 mm (3.0 in) of precipitation; June is the driest with about 1 mm (0.0 in).
What is the best time to visit Long Beach?
Judging by long-term averages, the most comfortable months are October–June.
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 395 m, while Long Beach lies at about 9 m. Temperatures on this page were therefore adjusted by +2.5 °C4.5 °F using the standard lapse rate of 6.5 °C per 1,000 m.