North Sumatra (Medan)
December
Weather in North Sumatra for December 2025
Your guide to North Sumatra weather in December - trends and predictions
The forecast for the first days of December 2025 in North Sumatra predicts temperatures to be around 28 °C, close to the historical average.
In general, the average temperature in North Sumatra at the beginning of December is 28.4 °C. As the month progressed, temperatures tended to moderately rise, reaching an average of 29 °C by the end of December.
North Sumatra experiences heavy rainfall in December, with over 20 rainy days and an average total precipitation 694.6 mm.
Is December a good time to visit North Sumatra? check out the best time to travel to North Sumatra page.
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Temperatures
Rain 🌧️
More
1
Dry days
30
Rainy days
0
Snow days
30°/22°
Temperatures
9 km/h
Avg max wind
88 %
Avg humidity
North Sumatra Weather December
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Temperatures trend during December in North Sumatra
See the weather trend as well as the moving average line
December weather in North Sumatra day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. |  Moderate rain | 29° /23° | 7.4 mm | 2.7 | |
| 2 Dec. |  Patchy rain possible | 27° /23° | 3.6 mm | 5 | |
| 3 Dec. | Patchy rain possible | 29° /23° | 2.5 mm | 6 | |
| 4 Dec. | Patchy rain possible | 29° /23° | 1.6 mm | 5 | |
| 5 Dec. | Patchy rain possible | 27° /23° | 2.7 mm | 5 | |
| 6 Dec. | Patchy rain possible | 30° /23° | 1.3 mm | 6 | |
| 7 Dec. | Patchy rain possible | 28° /22° | 3.8 mm | 5 | |
| 8 Dec. | Patchy rain possible | 30° /22° | 3.2 mm | 5 | |
| 9 Dec. | Moderate rain | 28° /22° | 5.9 mm | 5 | |
| 10 Dec. | Moderate rain | 27° /22° | 5.3 mm | 5 | |
| 11 Dec. | Patchy rain possible | 28° /21° | 4.6 mm | 5 | |
| 12 Dec. | Light rain shower | 29° /23° | 8.9 mm | 7 | |
| 13 Dec. | Light rain shower | 31° /22° | 14.6 mm | 7 | |
| 14 Dec. |  Mist | 30° /22° | 4.7 mm | 7 | |
| 15 Dec. | Light rain shower | 29° /22° | 9.9 mm | 7 | |
| 16 Dec. | Light rain shower | 29° /22° | 7.1 mm | 7 | |
| 17 Dec. | Light rain shower | 28° /22° | 3.9 mm | 7 | |
| 18 Dec. | Light rain shower | 29° /22° | 8.3 mm | 6 | |
| 19 Dec. | Patchy rain possible | 30° /22° | 5.6 mm | 7 | |
| 20 Dec. | Light rain shower | 31° /22° | 7.8 mm | 7 | |
| 21 Dec. |  Light drizzle | 30° /23° | 4.3 mm | 7 | |
| 22 Dec. |  Moderate or heavy rain shower | 27° /22° | 7.3 mm | 6 | |
| 23 Dec. | Light rain shower | 29° /22° | 11.4 mm | 6 | |
| 24 Dec. | Light rain shower | 29° /22° | 14.1 mm | 6 | |
| 25 Dec. | Patchy rain possible | 29° /22° | 12.7 mm | 6 | |
| 26 Dec. | Moderate or heavy rain shower | 28° /22° | 6 mm | 6 | |
| 27 Dec. | Moderate or heavy rain shower | 29° /22° | 5 mm | 6 | |
| 28 Dec. | Light rain shower | 29° /22° | 8.7 mm | 6 | |
| 29 Dec. | Moderate or heavy rain shower | 30° /22° | 7.1 mm | 7 | |
| 30 Dec. | Light rain shower | 30° /22° | 8.5 mm | 7 | |
| 31 Dec. | Moderate or heavy rain shower | 28° /22° | 7.8 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for North Sumatra 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 North Sumatra forecast closer to your planned date for the most up-to-date weather information.
Change Month
North Sumatra weather in December vs November vs January
Compare December weather in North Sumatra with the previous and following months. See how temperature, rainfall, wind, and other conditions change throughout the year to help you plan your visit.
| November | December | January | |
|---|---|---|---|
| Weather | Light rain shower | Light rain shower | Patchy rain possible |
| Temperatures | 30°/23° | 30°/22° | 30°/22° |
| Rainfall | 611 mm | 695 mm | 719 mm |
| Wind | 8.1 km/h | 8.5 km/h | 7.9 km/h |
| Humidity | 88% | 88% | 87% |
| Rainy days | 29 days | 30 days | 31 days |
| Dry days | 1 days | 1 days | 0 days |
Planning a trip to North Sumatra? Discover the best time to visit
North Sumatra in December - FAQ
What are the expected maximum and minimum temperatures in North Sumatra during December?
During December, expect a variety of temperatures with highs around 30° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in North Sumatra during December?
Significant rainfall exceeding 694.6 mm is expected in North Sumatra during December, occurring over more than 30 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in North Sumatra during December?
The average wind speed in North Sumatra during December is 9 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to North Sumatra in December?
As you prepare for your trip to North Sumatra in December, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in North Sumatra, during December, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Lightweight Clothing: T-shirts, blouses, shorts, skirts
- Rain Gear: Lightweight, waterproof clothing
- Footwear
- Waterproof Shoes
- Sandals/Flip-flops: Comfortable for warm climates
- Accessories
- Sunglasses: For sun protection
- Sun Hats: Wide-brimmed hats for sun protection in warm weather
- Umbrellas/Raincoats: For rainy days
- Personal Items
- Sunscreen: High SPF for sunny destinations
- Lip Balm with SPF: To protect against chapped lips
- Insect Repellent: For destinations with mosquitos or other insects
December rainfall patterns in North Sumatra
Explore the daily rainfall trends and prepare for North Sumatras December weather 💧
Typically, North Sumatra has 30 rainy days in December with a total of 694.6 mm of rainfall.
UV exposure in North Sumatra during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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