Long Beach, CA Climate & Monthly Averages
Long Beach has a semi-arid climate. August is the hottest month, averaging 80° by day; January is the coldest at 64°.
Long Beach's climate runs on sunshine and sparse rain
Long Beach runs on a dry-summer rhythm: the warmest months are also the driest. July averages 2 mm (0.1 in) while the wet season peaks in January at 2.8 inches (72 mm). Highs range from 64°F (18°C) to 80°F (27°C).
What the dry climate changes
8 months average under 20 mm of rain, the longest unbroken stretch running April through November. January is the coolest month, with highs of 64°F (18°C) and lows near 47°F (8°C). Warmth peaks in August: highs of 80°F (27°C), lows of 65°F (18°C). Between the average August and the average January lie 9°C, a narrower spread than about 77% of the cities we track.
The wettest month is January (2.8 inches (72 mm) across 6 days) and the driest July. The gridded 2015-2024 daily record for this location tops out at 107°F (41°C) and bottoms at 35°F (2°C) - decade extremes, not all-time station records.
More climate facts for Long Beach
- Hottest month: August - highs near 80°F (27°C)
- Coldest month: January - highs near 64°F (18°C)
- Decade extremes (2015-2024): 107°F (41°C) high · 35°F (2°C) low
- Wettest month: January (6 rainy days) · Sunniest: July (13.0 h sun/day)
- Climate type: semi-arid
- Annual swing: 9°C between the average warmest and coolest month · day to night: 9°C
- Average humidity: 72%
Heat, cold and scarce precipitation in the dataset
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ. Need another precipitation unit? Use the rainfall converter.
When the dry weather is easiest to use
Avoiding the hardest heat or cold
January to June is the sweet spot for Long Beach - temperatures sit either side of the peak heat rather than in it. Expect 68°F (20°C) in the afternoon and around 3 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in January.
Prepare for sun and cooler nights
Pack for Long Beach with light layers that can absorb a mild swing through the day. August nights average 65°F (18°C), so evenings rarely match the afternoons.
Monthly heat and rainfall table
| Month | High | Low | Rain days | Precipitation | Sunshine | Daylight | Wet-day chance | Humidity |
|---|---|---|---|---|---|---|---|---|
| January | 64° | 47° | 6 | 2.8 in | 8.4 h/day | 10.1 h | 19% | 75% |
| February | 65° | 48° | 4 | 2.3 in | 9.2 h/day | 10.9 h | 16% | 69% |
| March | 66° | 51° | 6 | 2.1 in | 10.4 h/day | 11.9 h | 20% | 73% |
| April | 70° | 54° | 2 | 0.5 in | 11.4 h/day | 13.0 h | 7% | 70% |
| May | 69° | 57° | 2 | 0.3 in | 11.8 h/day | 13.9 h | 5% | 74% |
| June | 75° | 60° | 0 | 0.1 in | 12.4 h/day | 14.4 h | 1% | 74% |
| July | 79° | 64° | 0 | 0.1 in | 13.0 h/day | 14.2 h | 2% | 75% |
| August | 80° | 65° | 1 | 0.3 in | 12.1 h/day | 13.4 h | 2% | 76% |
| September | 80° | 64° | 1 | 0.5 in | 11.2 h/day | 12.3 h | 5% | 75% |
| October | 77° | 59° | 2 | 0.3 in | 10.0 h/day | 11.3 h | 6% | 72% |
| November | 71° | 52° | 2 | 0.7 in | 9.3 h/day | 10.4 h | 8% | 65% |
| December | 65° | 47° | 5 | 2.3 in | 8.1 h/day | 9.9 h | 15% | 70% |
How daytime heat and cool nights change by month
Each card shows the average high and low. The bar places that month between Long Beach's coldest night and warmest afternoon.
January
- Rain
- 6 days
- Sunshine
- 8.4 h
- Daylight
- 10.1 h
February
- Rain
- 4 days
- Sunshine
- 9.2 h
- Daylight
- 10.9 h
March
- Rain
- 6 days
- Sunshine
- 10.4 h
- Daylight
- 11.9 h
April
- Rain
- 2 days
- Sunshine
- 11.4 h
- Daylight
- 13.0 h
May
- Rain
- 2 days
- Sunshine
- 11.8 h
- Daylight
- 13.9 h
June
- Rain
- 0 days
- Sunshine
- 12.4 h
- Daylight
- 14.4 h
July
- Rain
- 0 days
- Sunshine
- 13.0 h
- Daylight
- 14.2 h
August
- Rain
- 1 day
- Sunshine
- 12.1 h
- Daylight
- 13.4 h
September
- Rain
- 1 day
- Sunshine
- 11.2 h
- Daylight
- 12.3 h
October
- Rain
- 2 days
- Sunshine
- 10.0 h
- Daylight
- 11.3 h
November
- Rain
- 2 days
- Sunshine
- 9.3 h
- Daylight
- 10.4 h
December
- Rain
- 5 days
- Sunshine
- 8.1 h
- Daylight
- 9.9 h
Looking for warmer alternatives? Browse warm places by month, or compare Long Beach's coolest part of the year: January, December, February.
Heat and cold across the Long Beach year
Spring (March through May)
Spring is mild and warm here - highs near 68°F (20°C), nights near 54°F (12°C), and rain comes on about 10 days over the three months. Daylight is generous - around 11.2 hours of sun a day.
Summer (June through August)
Summer settles into easy warmth here - highs near 78°F (26°C), nights near 63°F (17°C), and precipitation is sparse, near 12 mm (0.5 in) for the season. Daylight is generous - around 12.5 hours of sun a day.
Fall (September through November)
Fall in Long Beach is mild and warm, with daytime highs averaging 76°F (24°C) and nights around 58°F (15°C); precipitation is sparse, near 1.6 inches (40 mm) for the season. Daylight is generous - around 10.2 hours of sun a day.
Winter (December through February)
Through winter, Long Beach stays on the cool side of mild: 65°F (18°C) by day, 47°F (8°C) after dark, and rain comes on about 15 days over the three months.
How unusual is Long Beach?
- Rain or snow reaches the ground on 32 days a year - fewer wet days than all but 4% of the 3496 cities we track.
- Annual precipitation is 12.4 inches (315 mm) - drier than all but 8% of the 3496 cities we track.
- 60% of the year's precipitation falls in its wettest three months - more seasonal than 92% of the 3496 cities we track.
These comparisons use the same ten-year window for every city in the dataset.