Climate averages 1991–2020
Rosarito weather
in December.
A mild, moderately wet month: the 11th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a mild month in Rosarito: daytime highs average 17.1°C and nights cool to about 9.9°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 44 mm of rain on roughly 5 days, which makes December a moderately wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 04 min on an average December day.
The nearest other city in this atlas is Tijuana (16 km away). In December its highs average 16.8°C, about as warm as Rosarito, with 51 mm of rain.
Among the 153 cities listed in Mexico, Rosarito ranks 147th of 153 for the warmest December highs and joint 133rd of 153 for the driest December (rainfall, lowest first). The mean December high of those 153 cities is 22.7°C; Rosarito is 5.6°C cooler than that mean.
From December to January, average highs stay level at 17.2°C, and monthly rainfall rises from 44 mm to 56 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Rosarito climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 17.2°C9.9°C | 9.9°C | 56 | 5.5 | 10.310 h |
| February | 16.8°C10.1°C | 10.1°C | 69 | 6.3 | 11.011 h |
| March | 17.4°C11.0°C | 11.0°C | 43 | 5.2 | 12.012 h |
| April | 18.5°C12.3°C | 12.3°C | 18 | 3.2 | 13.013 h |
| May | 19.6°C14.2°C | 14.2°C | 7.3 | 1.5 | 13.814 h |
| June | 21.6°C16.0°C | 16.0°C | 1.0 | 0.2 | 14.214 h |
| July | 23.9°C18.3°C | 18.3°C | 1.1 | 0.2 | 14.114 h |
| August | 24.9°C19.3°C | 19.3°C | 0.4 | 0.1 | 13.313 h |
| September | 24.5°C18.5°C | 18.5°C | 3.1 | 0.5 | 12.412 h |
| October | 22.5°C16.0°C | 16.0°C | 13 | 2.1 | 11.411 h |
| November | 19.9°C12.7°C | 12.7°C | 20 | 3.1 | 10.511 h |
| December, selected | 17.1°C9.9°C | 9.9°C | 44 | 5.2 | 10.110 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- Tijuana in DecemberMexico · 16 kmHigh 16.8°C · Low 9.0°C · 51 mm rain
- Chula Vista in DecemberUnited States · 31 kmHigh 17.0°C · Low 9.4°C · 47 mm rain
- San Diego in DecemberUnited States · 41 kmHigh 17.3°C · Low 8.8°C · 40 mm rain
- El Cajon in DecemberUnited States · 49 kmHigh 17.7°C · Low 7.9°C · 47 mm rain
- Ensenada in DecemberMexico · 69 kmHigh 18.5°C · Low 9.1°C · 45 mm rain
- Escondido in DecemberUnited States · 84 kmHigh 17.4°C · Low 5.7°C · 59 mm rain
- San Marcos in DecemberUnited States · 88 kmHigh 16.7°C · Low 6.2°C · 54 mm rain
- Vista in DecemberUnited States · 95 kmHigh 17.6°C · Low 6.6°C · 54 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Rosarito) is explained once on the Rosarito year overview and on the Sources, method and limits page.