Galveston, Texas weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Poor
Best time to visit: May – October
What is the weather like in Galveston, Texas in December?
In December, Galveston, Texas is mild: daytime highs average 17 °C, and nights cool down to about 12 °C. The sea averages 16.7 °C – swimming is only for the hardy. Expect around 5 hours of sunshine a day. Rain is frequent, with about 9 rainy days and 101 mm in total. All in all, December is not an ideal month for a holiday in Galveston, Texas.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 47 | 17 | 19 |
| Day | 21° | 17° | 16° |
| Night | 16° | 12° | 10° |
| Sea | 21° | 17° | 14° |
| Sun | 5 h | 5 h | 5 h |
| Rain days | 8 | 9 | 9 |
More details for December
- Daylight
- 10 h 17 min07:06 – 17:23
- UV index
- 4 · moderateclear sky, noon (estimate)All months
- Muggy days
- 5 daysdew point 18 °C or moreAll months
- Wind
- 21 km/haverage daily peakAll months
- Cloud cover
- 57 %on averageAll months
- Hot days
- 0 days30 °C or moreAll months
- Time zone
- UTC−6America/Chicago
How the score comes together
- Temperatureweight 35 %0 %
- Seaweight 25 %0 %
- Sunshineweight 20 %25 %
- Few rainy daysweight 20 %61 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Galveston, Texas in December: quick answers
Is Galveston, Texas hot in December?
No. In December, Galveston, Texas is mild: daytime highs average 17 °C and nights drop to about 12 °C.
Can you swim in Galveston, Texas in December?
Only if you don't mind cold water: in December the sea averages just 16.7 °C. Comfortable swimming is possible from April to November.
Does it rain much in Galveston, Texas in December?
Rain is frequent, with about 9 rainy days and 101 mm in total.
Galveston, Texas month by month
The whole year in Galveston, TexasAll destinations: USAWhere to go in DecemberSea temperature in December
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