Shinjuku
December
Weather in Shinjuku for December 2025
Your guide to Shinjuku weather in December - trends and predictions
In general, the average temperature in Shinjuku at the beginning of December is 15 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 12 °C by the end of December.
With an average of 4 rainy days, Shinjuku experiences minimal rainfall in December.
Is December a good time to visit Shinjuku? check out the best time to travel to Shinjuku page.
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Temperatures
Rain 🌧️
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27
Dry days
4
Rainy days
0
Snow days
13°/8°
Temperatures
32 km/h
Avg max wind
52 %
Avg humidity
Shinjuku Weather December
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  14° | 2  15° | 3 18° | 4  17° | 5  14° | 6 14° | 7 13° |
| 8 13° | 9 10° | 10 12° | 11 12° | 12 10° | 13 13° | 14 12° |
| 15 11° | 16 12° | 17 13° | 18 12° | 19  9° | 20 13° | 21 15° |
| 22 13° | 23 10° | 24 10° | 25 12° | 26 14° | 27 11° | 28 11° |
| 29 12° | 30 10° | 31 14° |
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Temperatures trend during December in Shinjuku
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Dec. | Sunny | 14° /11° | 0 mm | 4 | |
| 2 Dec. | Partly cloudy | 15° /11° | 0 mm | 5 | |
| 3 Dec. | Sunny | 18° /11° | 0 mm | 5 | |
| 4 Dec. | Overcast | 17° /13° | 0 mm | 4 | |
| 5 Dec. | Patchy rain possible | 14° /11° | 0.2 mm | 3 | |
| 6 Dec. | Sunny | 14° /11° | 0 mm | 4 | |
| 7 Dec. | Overcast | 13° /9° | 0 mm | 3 | |
| 8 Dec. | Patchy rain possible | 13° /9° | 0.1 mm | 3 | |
| 9 Dec. | Overcast | 10° /8° | 0 mm | 3 | |
| 10 Dec. | Overcast | 12° /9° | 0.2 mm | 3 | |
| 11 Dec. | Overcast | 12° /9° | 0 mm | 3 | |
| 12 Dec. | Overcast | 10° /6° | 0 mm | 3 | |
| 13 Dec. | Overcast | 13° /7° | 0 mm | 3 | |
| 14 Dec. | Partly cloudy | 12° /7° | 0.8 mm | 4 | |
| 15 Dec. | Sunny | 11° /7° | 0.3 mm | 4 | |
| 16 Dec. | Sunny | 12° /8° | 0 mm | 4 | |
| 17 Dec. | Partly cloudy | 13° /8° | 0 mm | 4 | |
| 18 Dec. | Overcast | 12° /6° | 0.5 mm | 3 | |
| 19 Dec. | Moderate rain at times | 9° /6° | 2.6 mm | 2 | |
| 20 Dec. | Overcast | 13° /7° | 0 mm | 3 | |
| 21 Dec. | Overcast | 15° /11° | 0 mm | 4 | |
| 22 Dec. | Overcast | 13° /7° | 0 mm | 3 | |
| 23 Dec. | Overcast | 10° /5° | 0 mm | 3 | |
| 24 Dec. | Partly cloudy | 10° /6° | 0 mm | 4 | |
| 25 Dec. | Overcast | 12° /7° | 0 mm | 3 | |
| 26 Dec. | Partly cloudy | 14° /12° | 0 mm | 4 | |
| 27 Dec. | Overcast | 11° /8° | 0 mm | 3 | |
| 28 Dec. | Partly cloudy | 11° /6° | 0 mm | 4 | |
| 29 Dec. | Sunny | 12° /7° | 0 mm | 4 | |
| 30 Dec. | Overcast | 10° /6° | 0 mm | 3 | |
| 31 Dec. | Overcast | 14° /8° | 0 mm | 3 | |
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Important Notice
Our weather forecast for Shinjuku 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 Shinjuku forecast closer to your planned date for the most up-to-date weather information.
Shinjuku in December - FAQ
What are the expected maximum and minimum temperatures in Shinjuku during December?
During December, expect a variety of temperatures with highs around 13° and lows near 8°, suitable for diverse activities and preferences.
How much rainfall should be expected in Shinjuku during December?
Rainfall in Shinjuku during December is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 4 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Shinjuku during December?
The average wind speed in Shinjuku during December is 32 km/h, suggesting breezy to windy conditions, depending on your activities.
What to pack to Shinjuku in December?
As you prepare for your trip to Shinjuku 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 Shinjuku, during December, is comfortable and enjoyable, regardless of the weather conditions.
- Clothing
- Warm Clothing: Sweaters, hoodies, long pants
- Accessories
- Scarves: To protect you from the cold wind
- Gloves/Mittens: Essential for cold weather
- Warm Hats: Warm hats for insulation in cold weather
December rainfall patterns in Shinjuku
Explore the daily rainfall trends and prepare for Shinjukus December weather 💧
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