Wakuya, Japan — Weather in December 2026

Monthly climate averages for Wakuya, Japan. Based on 10-year ERA5 reanalysis data.

Cfa Humid Subtropical
1.9 /10
Poor

December is a poor month in Wakuya

Climate Overview

Wakuya, Japan in December has cold conditions, with highs averaging around 6.7°C (44°F). Sea temperature stays cool at 11.6°C (53°F).

This month falls at the beginning of Winter. Cold conditions dominate the month.

Daily highs in December gradually drop from around 9°C (48°F) at the start to 5°C (41°F) by month's end.

December sees fairly even rainfall, totalling about 49 mm across the month.

Wind speeds pick up through the month, from 22 km/h (14 mph) to 25 km/h (16 mph).

The warmest days tend to fall around the 1th, averaging 9.4°C (49°F).

Compared to November, this month is about 6°C cooler with 2 more rainy days. Temperatures begin dropping heading into January.

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Monthly December Averages

Temperature
7°C / 1°C
Feels Like
2°C / -4°C
Rain
9 days · 50 mm
Sunshine
7.3h / day
Humidity
73% — Humid
Wind
24 km/h
Wind Direction
WNW (286°)
Gusts
43 km/h
Daylight
9.5 h
Cloud Cover
50%
Clear Sky Days
3.1
UV Index
2.5 — Moderate
Sea Temperature
12°C
Dew Point
-1°C — Dry
Moon Phase
Waxing Crescent · 31%
Snow Days
6 days · 4.4 cm
Frost Days
11 days

Climate Charts

Daily averages based on historical data (2016–2025)

Daily Temperature

16°C 12°C 8°C 4°C 0°C -4°C -8°C 151015202531
High Low

Daily Precipitation

0 mm 2 mm 4 mm 6 mm 151015202531
Rainfall

Daily Sunshine

0h 2h 4h 6h 8h 10h 151015202531
Sunshine

Daily Wind Speed

0 7 14 21 28 35 151015202531
Wind Speed
Sun Position
Sunrise 06:45
Daylight 9.5h
Sunset 16:15

What to Expect

Cold daytime highs of 7°C (44°F) mean shorter outdoor excursions with warming breaks.

Rain usually comes in shorter passing showers rather than all-day rain.

1 of the last 5 yearly records were warmer than this month's long-run average.

Compare Months

January
Poor
Temp
4°C / -1°C
Feels Like
-1°C / -7°C
Rain
9days (50 mm) Wet
Sun
7.5h Good
Humidity
70% Muggy
UV
2.8 Moderate
Snow Days
10days
View Details
February
Poor
Temp
5°C / -1°C
Feels Like
0°C / -6°C
Rain
7days (39 mm) Good
Sun
8.5h Good
Humidity
67% Muggy
UV
3.8 Moderate
Snow Days
6days
View Details
March
Poor
Temp
10°C / 2°C
Feels Like
6°C / -2°C
Rain
9days (87 mm) Wet
Sun
8.7h Good
Humidity
70% Muggy
UV
4.7 Moderate
Snow Days
3days
View Details
April
Fair
Temp
14°C / 7°C
Feels Like
12°C / 3°C
Rain
10days (105 mm) Wet
Sun
9.5h Good
Humidity
73% Muggy
UV
5.7 High
View Details
May
Good
Temp
19°C / 12°C
Feels Like
19°C / 10°C
Rain
12days (103 mm) Wet
Sun
9.3h Good
Humidity
77% Humid
UV
5.9 High
View Details
June best
Excellent
Temp
23°C / 16°C
Feels Like
24°C / 17°C
Rain
11days (113 mm) Wet
Sun
9.3h Good
Humidity
83% Humid
UV
6.4 High
View Details
July best
Excellent
Temp
26°C / 21°C
Feels Like
30°C / 24°C
Rain
14days (133 mm) Wet
Sun
8.7h Good
Humidity
86% Very Muggy
UV
6.9 High
View Details
August
Good
Temp
28°C / 23°C
Feels Like
32°C / 26°C
Rain
16days (169 mm) Wet
Sun
9h Good
Humidity
86% Very Muggy
UV
6.9 High
View Details
September best
Excellent
Temp
24°C / 19°C
Feels Like
26°C / 20°C
Rain
12days (137 mm) Wet
Sun
8h Good
Humidity
83% Humid
UV
5.2 High
View Details
October
Good
Temp
18°C / 12°C
Feels Like
17°C / 11°C
Rain
11days (138 mm) Wet
Sun
7.4h Good
Humidity
78% Humid
UV
4 Moderate
View Details
November
Fair
Temp
13°C / 6°C
Feels Like
10°C / 3°C
Rain
7days (48 mm) Good
Sun
7.7h Good
Humidity
75% Muggy
UV
3.1 Moderate
Snow Days
1days
View Details
December
Poor
Temp
7°C / 1°C
Feels Like
2°C / -4°C
Rain
9days (50 mm) Wet
Sun
7.3h Good
Humidity
73% Muggy
UV
2.5 Moderate
Snow Days
6days
View Details
Month Temp Feels Like Rain Sun Humidity UV Status
January 4°C / -1°C -1°C / -7°C 9days (50 mm) Wet 7.5h Good 70% Muggy 2.8 Moderate Poor View Details
February 5°C / -1°C 0°C / -6°C 7days (39 mm) Good 8.5h Good 67% Muggy 3.8 Moderate Poor View Details
March 10°C / 2°C 6°C / -2°C 9days (87 mm) Wet 8.7h Good 70% Muggy 4.7 Moderate Poor View Details
April 14°C / 7°C 12°C / 3°C 10days (105 mm) Wet 9.5h Good 73% Muggy 5.7 High Fair View Details
May 19°C / 12°C 19°C / 10°C 12days (103 mm) Wet 9.3h Good 77% Humid 5.9 High Good View Details
June best 23°C / 16°C 24°C / 17°C 11days (113 mm) Wet 9.3h Good 83% Humid 6.4 High Excellent View Details
July best 26°C / 21°C 30°C / 24°C 14days (133 mm) Wet 8.7h Good 86% Very Muggy 6.9 High Excellent View Details
August 28°C / 23°C 32°C / 26°C 16days (169 mm) Wet 9h Good 86% Very Muggy 6.9 High Good View Details
September best 24°C / 19°C 26°C / 20°C 12days (137 mm) Wet 8h Good 83% Humid 5.2 High Excellent View Details
October 18°C / 12°C 17°C / 11°C 11days (138 mm) Wet 7.4h Good 78% Humid 4 Moderate Good View Details
November 13°C / 6°C 10°C / 3°C 7days (48 mm) Good 7.7h Good 75% Muggy 3.1 Moderate Fair View Details
December 7°C / 1°C 2°C / -4°C 9days (50 mm) Wet 7.3h Good 73% Muggy 2.5 Moderate Poor View Details

What to Wear

Full winter gear is a must — insulated coat, thermal base layers, warm hat, gloves, and waterproof boots.

A waterproof jacket or compact umbrella is recommended for occasional showers.

Packing List

Warm coatUmbrellaComfortable walking shoes

Frequently Asked Questions

December is typically poor for visiting Wakuya, with average highs of 7°C (44°F) and around 9 rainy days. Wakuya, Japan in December has cold conditions, with highs averaging around 6.7°C (44°F). Sea temperature stays cool at 1
Wakuya typically sees around 9 rainy days in December with 50 mm (2 in) of total rainfall. An umbrella should suffice.
Yes, nights in Wakuya during December are cold, averaging 1°C (34°F). Pack warm layers and a coat for evenings.
With highs of 7°C (44°F) and lows of 1°C (34°F) in December, we recommend: Warm coat, Umbrella, Comfortable walking shoes. Comfortable walking shoes are essential.
December is not the most favourable month weather-wise in Wakuya. Consider visiting during months with milder temperatures or less rainfall for a better experience.
The average UV index in Wakuya during December is 3 (moderate). Sunscreen and sunglasses are recommended during midday hours.
Wakuya gets approximately 10 hours of daylight per day in December, with around 7 hours of sunshine.
Yes, Wakuya typically sees around 6 snow days in December with roughly 4 cm (2 in) of snowfall.

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