Aoki, Japan experiences average highs of 16°C (61°F) and lows of 7°C (45°F) throughout the year. Rainfall is moderate, averaging about 12 rainy days per month. Sunshine is abundant, averaging about 9 hours per day. Average highs have stayed broadly stable across the available records.
Aoki, Japan Weather & Climate 2026
Monthly climate averages for Aoki, Japan. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Mar–Sep At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5.1/10
Best: May, June, August, September
UV Index
5
Low
Temperature 16°C / 7°C
Feels Like 15°C / 6°C
Rainy Days 12
Rainfall 109 mm
Sunshine 9 h
Humidity 75%
Wind Speed 10 km/h
Dew Point 7°C
Snow Days 9 days
Frost Days 16 days
Hottest Month
28°C
August
Avg Low 21°C
Rain 14 days
Coldest Month
-5°C
January
Avg High 2°C
Rain 9 days
Driest Month
8 days
November
Avg High 12°C
Avg Low 3°C
Windiest Month
12 km/h
February (Gusts 43)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 04:41
Daylight 14.4h
Sunset 19:06
Live conditions —
Aoki on the map · live conditions
Aoki, Japan
- Continent
- Asia
- Country
- Japan
- City
- Aoki
- Population
- 4.1K
- Coordinates
- 36.37°, 138.13°
Seasonal Breakdown
Spring
Mar–May
Avg High 15°C
Avg Low 5°C
Rain 11 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 26°C
Avg Low 18°C
Rain 15 days/mo
2/3 best months
Autumn
Sep–Nov
Avg High 18°C
Avg Low 10°C
Rain 11 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 4°C
Avg Low -4°C
Rain 9 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
High Low Shaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 2°C / -5°C . Feb: 4°C / -4°C . Mar: 9°C / 0°C . Apr: 15°C / 5°C . May: 21°C / 10°C . Jun: 24°C / 15°C . Jul: 27°C / 20°C . Aug: 28°C / 21°C . Sep: 25°C / 17°C . Oct: 18°C / 10°C . Nov: 12°C / 3°C . Dec: 5°C / -2°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 56 mm. Feb: 64 mm. Mar: 104 mm. Apr: 110 mm. May: 123 mm. Jun: 148 mm. Jul: 177 mm. Aug: 113 mm. Sep: 139 mm. Oct: 153 mm. Nov: 66 mm. Dec: 59 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 70%. Feb: 68%. Mar: 70%. Apr: 70%. May: 70%. Jun: 76%. Jul: 81%. Aug: 80%. Sep: 82%. Oct: 80%. Nov: 76%. Dec: 72%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 12 km/h . Feb: 12 km/h . Mar: 12 km/h . Apr: 12 km/h . May: 10 km/h . Jun: 9 km/h . Jul: 8 km/h . Aug: 8 km/h . Sep: 8 km/h . Oct: 9 km/h . Nov: 10 km/h . Dec: 11 km/h .
Sunshine
Sunshine
Sunshine: Jan: 8h. Feb: 9h. Mar: 9h. Apr: 9h. May: 9h. Jun: 9h. Jul: 9h. Aug: 10h. Sep: 8h. Oct: 7h. Nov: 8h. Dec: 8h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 6. Jun: UV 7. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 4. Dec: UV 3.
Monthly Daylight Hours
Daylight 12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow Days Snowfall
Snow Days: Jan: 15 days. Feb: 12 days. Mar: 10 days. Apr: 3 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 3 days. Dec: 12 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending drier by about 26 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 30°C | Aug · 28°C |
| Coldest month | Feb 2025 · -5°C | Jan · -5°C |
| Wettest month | Jun 2025 · 145 mm | Jul · 177 mm |
| Windiest month | Feb 2025 · 14 km/h | Feb · 12 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Fair May best
Excellent June best
Excellent July
Fair August best
Good September best
Excellent October
Fair November
Fair December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 2°C / -5°C | -2°C / -9°C | 9days (56 mm) Wet | 8h Good | 70% Muggy | 3.2 Moderate | Poor | View Details |
| February | 4°C / -4°C | 0°C / -8°C | 9days (64 mm) Wet | 8.6h Good | 68% Muggy | 4.1 Moderate | Poor | View Details |
| March | 9°C / 0°C | 6°C / -3°C | 12days (104 mm) Wet | 8.7h Good | 70% Muggy | 5.1 High | Poor | View Details |
| April | 15°C / 5°C | 14°C / 3°C | 11days (110 mm) Wet | 9.3h Good | 70% Muggy | 6 High | Fair | View Details |
| May best | 21°C / 10°C | 21°C / 9°C | 11days (123 mm) Wet | 9.3h Good | 70% Muggy | 6.4 High | Excellent | View Details |
| June best | 24°C / 15°C | 25°C / 16°C | 14days (148 mm) Wet | 9.1h Good | 76% Humid | 6.8 High | Excellent | View Details |
| July | 27°C / 20°C | 31°C / 22°C | 16days (177 mm) Wet | 8.9h Good | 81% Humid | 7.5 Very High | Fair | View Details |
| August best | 28°C / 21°C | 32°C / 23°C | 14days (113 mm) Wet | 9.8h Good | 80% Humid | 7.3 Very High | Good | View Details |
| September best | 25°C / 17°C | 27°C / 19°C | 13days (139 mm) Wet | 8.1h Good | 82% Humid | 6.1 High | Excellent | View Details |
| October | 18°C / 10°C | 18°C / 9°C | 11days (153 mm) Wet | 7.1h Good | 80% Humid | 4.4 Moderate | Fair | View Details |
| November | 12°C / 3°C | 10°C / 1°C | 8days (66 mm) Wet | 7.6h Good | 76% Humid | 3.6 Moderate | Fair | View Details |
| December | 5°C / -2°C | 2°C / -6°C | 10days (59 mm) Wet | 7.7h Good | 72% Muggy | 2.9 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Aoki are May, June, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Aoki, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Aoki is August, with average daytime highs of 28°C (83°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Aoki is January, with average overnight lows of -5°C (23°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Aoki is July, averaging 177mm of precipitation across 16 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Aoki runs through July, June, August, September, with the heaviest rainfall in July. Based on 10-year averages for Aoki.
Aoki receives approximately 102 sunshine hours per year. The sunniest month is August with around 10 hours. Based on climate data for Aoki.
The least favorable months to visit Aoki are January, February, March, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider May, June, August, September instead.
The annual average UV index in Aoki is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Aoki is 75%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Aoki receives snow. Months with snowfall average 9 snow days and 16 cm (6 in) of accumulation, with about 16 frost days during winter.
Average wind speeds in Aoki are 10 km/h (6 mph). The windiest month is February with peak winds reaching 12 km/h (8 mph) (gusts up to 43 km/h / 26 mph).
Aoki averages 2 clear-sky days per month with overall cloud cover around 62%. The clearest skies occur in November.
The annual average dew point in Aoki is 7°C (45°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Aoki has a Humid Subtropical climate, classified as Cfa under the Köppen system. Temperate climates have mild winters and warm summers, with rainfall spread across the year and four distinct seasons.
The 'feels like' temperature in Aoki ranges from 6°C (43°F) to 15°C (59°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
July is not the best time to visit Aoki, with a climate score of 6.3/10. Consider visiting during May, June, August, September instead for better conditions.
For July in Aoki, pack Umbrella, Waterproof jacket, Waterproof shoes, Breathable clothing, Sunscreen (SPF 30+). With average highs of 27°C (81°F) and 16 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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