Long Beach weather in January
Temperature, sea and sunshine in January: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in January
Excellent
Best time to visit: January – December
What is the weather like in Long Beach in January?
In January, Long Beach is mild: daytime highs average 18 °C, and nights cool down to about 8 °C. The sea averages 15.1 °C – swimming is only for the hardy. The sun shines for around 7 hours a day. Rain is rare: about 5 days bring 54 mm in total. All in all, January is an excellent month for a holiday in Long Beach.
January compared
How the weather changes from December to February. Tap a month to open it.
| DecemberDec | JanuaryJan | FebruaryFeb | |
|---|---|---|---|
| Score | 89 | 90 | 89 |
| Day | 18° | 18° | 18° |
| Night | 8° | 8° | 8° |
| Sea | 16° | 15° | 15° |
| Sun | 6 h | 7 h | 7 h |
| Rain days | 5 | 5 | 6 |
More details for January
- Daylight
- 10 h 8 min06:57 – 17:05
- UV index
- 3 · moderateclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 15 km/haverage daily peakAll months
- Cloud cover
- 45 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−8America/Los_Angeles
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %58 %
- Few rainy daysweight 30 %94 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in January
- A jumper for the evenings
Long Beach in January: quick answers
Is Long Beach hot in January?
No. In January, Long Beach is mild: daytime highs average 18 °C and nights drop to about 8 °C.
Can you swim in Long Beach in January?
Only if you don't mind cold water: in January the sea averages just 15.1 °C. Comfortable swimming is possible from July to September.
Does it rain much in Long Beach in January?
Rain is rare: about 5 days bring 54 mm in total.
Long Beach month by month
The whole year in Long BeachAll destinations: USAWhere to go in JanuarySea temperature in January
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences