Southern (Galle)
December
Weather in Southern for December 2025
Your guide to Southern weather in December - trends and predictions
Until now, December 2025 in Southern has been nearly identical to the historical average, with a temperature of 27.6 °C (showing only a slight deviation of -0.4 °C).
The forecast for the next days in Southern predicts temperatures to be around 27 °C, close to the historical average.
In general, the average temperature in Southern at the beginning of December is 28 °C. As the month progressed, temperatures tended to slightly decrease, reaching an average of 27.7 °C by the end of December.
Southern experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 122 mm.
Temperatures
Rain 🌧️
6
Dry days
25
Rainy days
0
Snow days
28°/24°
Temperatures
18 km/h
Avg max wind
80 %
Avg humidity
Southern Weather December
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What’s the Weather Like in Southern This December?
Discover the average temperatures and weather trends across Southern’s cities this December.
Temperatures trend during December in Southern
See the weather trend as well as the moving average line
December weather in Southern day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Patchy rain possible | 28° /25° | 4 mm | 6 | |
| 2 Dec. | Patchy rain possible | 28° /25° | 0.3 mm | 7 | |
| 3 Dec. | Patchy rain possible | 28° /24° | 2.9 mm | 6 | |
| 4 Dec. |  Partly cloudy | 28° /24° | 3.6 mm | 7 | |
| 5 Dec. | Light rain shower | 28° /24° | 5.3 mm | 6 | |
| 6 Dec. | Light rain shower | 28° /24° | 13.1 mm | 6 | |
| 7 Dec. | Patchy rain possible | 28° /24° | 5.9 mm | 6 | |
| 8 Dec. | Light rain shower | 28° /24° | 2 mm | 6 | |
| 9 Dec. | Patchy rain possible | 28° /24° | 3.5 mm | 6 | |
| 10 Dec. | Patchy rain possible | 28° /24° | 8.7 mm | 6 | |
| 11 Dec. | Patchy rain possible | 28° /24° | 4.3 mm | 6 | |
| 12 Dec. | Patchy rain possible | 28° /23° | 11.6 mm | 6 | |
| 13 Dec. |  Moderate rain | 28° /24° | 5.3 mm | 2.4 | |
| 14 Dec. | Moderate rain | 27° /24° | 11.2 mm | 2.2 | |
| 15 Dec. | Patchy rain possible | 27° /24° | 1.1 mm | 2.3 | |
| 16 Dec. | Partly cloudy | 27° /23° | 0 mm | 2 | |
| 17 Dec. | Moderate rain | 29° /24° | 6.7 mm | 2.7 | |
| 18 Dec. | Patchy rain possible | 28° /24° | 3.8 mm | 6 | |
| 19 Dec. | Patchy rain possible | 27° /24° | 1.8 mm | 6 | |
| 20 Dec. | Patchy rain possible | 27° /25° | 3.5 mm | 6 | |
| 21 Dec. | Patchy rain possible | 26° /24° | 0.7 mm | 6 | |
| 22 Dec. | Patchy rain possible | 27° /24° | 0.1 mm | 6 | |
| 23 Dec. | Patchy rain possible | 27° /25° | 0.2 mm | 6 | |
| 24 Dec. | Partly cloudy | 27° /24° | 0.1 mm | 7 | |
| 25 Dec. |  Sunny | 27° /23° | 0 mm | 6 | |
| 26 Dec. | Sunny | 27° /22° | 0 mm | 6 | |
| 27 Dec. | Light rain shower | 28° /24° | 1.7 mm | 6 | |
| 28 Dec. | Light rain shower | 28° /24° | 10.8 mm | 6 | |
| 29 Dec. | Patchy rain possible | 28° /25° | 4.6 mm | 6 | |
| 30 Dec. | Light rain shower | 29° /24° | 5 mm | 6 | |
| 31 Dec. | Light rain shower | 27° /24° | 8.6 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Southern in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Southern forecast closer to your planned date for the most up-to-date weather information.
Change Month
Southern in December - FAQ
What are the expected maximum and minimum temperatures in Southern during December?
During December, expect a variety of temperatures with highs around 28° and lows near 24°, suitable for diverse activities and preferences.
How much rainfall should be expected in Southern during December?
Significant rainfall exceeding 122 mm is expected in Southern during December, occurring over more than 25 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Southern during December?
The average wind speed in Southern during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Southern
Explore the daily rainfall trends and prepare for Southerns December weather 💧
Typically, Southern has 25 rainy days in December with a total of 122 mm of rainfall.
UV exposure in Southern during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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