Tagami, Japan experiences average highs of 17°C (63°F) and lows of 10°C (50°F) throughout the year. Rainfall is frequent, averaging about 17 rainy days per month. Average highs have stayed broadly stable across the available records.
Tagami, Japan Weather & Climate 2026
Monthly climate averages for Tagami, Japan. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Apr–Oct 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.7/10
Best: May, June, September, October
UV Index
5
Low
Temperature 17°C / 10°C
Feels Like 17°C / 9°C
Rainy Days 17
Rainfall 152 mm
Sunshine 8 h
Humidity 82%
Wind Speed 17 km/h
Dew Point 11°C
Snow Days 9 days
Frost Days 12 days
Hottest Month
30°C
August
Avg Low23°C
Rain16days
Coldest Month
-2°C
January
Avg High4°C
Rain26days
Driest Month
13days
May
Avg High22°C
Avg Low12°C
Windiest Month
20 km/h
January (Gusts 44)
Sea Temperature
9°C – 30°C
Warmest water: August (
29.6°C
)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures, heavy rainfall.
Sun Position
Sunrise 04:23
Daylight 14.8h
Sunset 19:08
Live conditions—
Tagami on the map · live conditions
Tagami, Japan
- Continent
- Asia
- Country
- Japan
- City
- Tagami
- Population
- 11.5K
- Coordinates
- 37.71°, 139.07°
Seasonal Breakdown
Spring
Mar–May
Avg High 16°C
Avg Low 7°C
Rain 15 days/mo
1/3 best months
Summer
Jun–Aug
Avg High 28°C
Avg Low 21°C
Rain 15 days/mo
1/3 best months
Autumn
Sep–Nov
Avg High 20°C
Avg Low 13°C
Rain 16 days/mo
2/3 best months
Winter
Dec–Feb
Avg High 5°C
Avg Low -1°C
Rain 24 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: 4°C / -2°C . Feb: 5°C / -1°C . Mar: 10°C / 2°C . Apr: 16°C / 7°C . May: 22°C / 12°C . Jun: 25°C / 17°C . Jul: 29°C / 22°C . Aug: 30°C / 23°C . Sep: 26°C / 19°C . Oct: 20°C / 13°C . Nov: 14°C / 7°C . Dec: 7°C / 1°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 187 mm. Feb: 124 mm. Mar: 114 mm. Apr: 106 mm. May: 108 mm. Jun: 122 mm. Jul: 200 mm. Aug: 182 mm. Sep: 164 mm. Oct: 145 mm. Nov: 153 mm. Dec: 220 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 85%. Feb: 81%. Mar: 78%. Apr: 77%. May: 78%. Jun: 82%. Jul: 86%. Aug: 85%. Sep: 84%. Oct: 82%. Nov: 82%. Dec: 86%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 20 km/h . Mar: 18 km/h . Apr: 18 km/h . May: 16 km/h . Jun: 14 km/h . Jul: 13 km/h . Aug: 13 km/h . Sep: 14 km/h . Oct: 16 km/h . Nov: 18 km/h . Dec: 20 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 7h. Mar: 8h. Apr: 9h. May: 10h. Jun: 10h. Jul: 10h. Aug: 10h. Sep: 8h. Oct: 7h. Nov: 7h. Dec: 6h.
Sea Temperature
Sea Temperatureswim
Line chart showing monthly sea temperature. Jan: 10°C . Feb: 9°C . Mar: 10°C . Apr: 12°C . May: 16°C . Jun: 21°C . Jul: 27°C . Aug: 30°C . Sep: 28°C . Oct: 23°C . Nov: 18°C . Dec: 13°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 4. Apr: UV 6. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 19 days. Feb: 16 days. Mar: 5 days. Apr: 1 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 1 days. Dec: 12 days.
Climate Trends
Average highs have stayed broadly stable across the available records. Average rainfall is trending wetter by about 35 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 33°C | Aug · 30°C |
| Coldest month | Jan 2025 · -2°C | Jan · -2°C |
| Wettest month | Sep 2025 · 257 mm | Dec · 220 mm |
| Windiest month | Feb 2025 · 22 km/h | Jan · 20 km/h |
Month-by-Month Weather Table
January
Wet 
February
Wet March
Poor April
Fair May best
Excellent June best
Excellent July
Wet August
Wet September best
Excellent October best
Good November
Wet December
Wet | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 4°C / -2°C | 0°C / -6°C | 26days (187 mm) Wet | 5.8h Fair | 85% Humid | 2.3 Moderate | Wet | View Details |
| February | 5°C / -1°C | 1°C / -6°C | 20days (124 mm) Wet | 7.3h Good | 81% Humid | 3.3 Moderate | Wet | View Details |
| March | 10°C / 2°C | 8°C / -2°C | 17days (114 mm) Wet | 8.1h Good | 78% Humid | 4.4 Moderate | Poor | View Details |
| April | 16°C / 7°C | 15°C / 4°C | 14days (106 mm) Wet | 9.1h Good | 77% Humid | 5.7 High | Fair | View Details |
| May best | 22°C / 12°C | 23°C / 11°C | 13days (108 mm) Wet | 9.5h Good | 78% Humid | 5.7 High | Excellent | View Details |
| June best | 25°C / 17°C | 28°C / 18°C | 13days (122 mm) Wet | 9.6h Good | 82% Humid | 6.6 High | Excellent | View Details |
| July | 29°C / 22°C | 34°C / 26°C | 16days (200 mm) Wet | 9.5h Good | 86% Very Muggy | 6.9 High | Wet | View Details |
| August | 30°C / 23°C | 36°C / 27°C | 16days (182 mm) Wet | 10h Excellent | 85% Humid | 7 High | Wet | View Details |
| September best | 26°C / 19°C | 30°C / 21°C | 15days (164 mm) Wet | 8.2h Good | 84% Humid | 5.5 High | Excellent | View Details |
| October best | 20°C / 13°C | 20°C / 12°C | 14days (145 mm) Wet | 7.2h Good | 82% Humid | 4 Moderate | Good | View Details |
| November | 14°C / 7°C | 12°C / 4°C | 18days (153 mm) Wet | 6.9h Fair | 82% Humid | 2.7 Moderate | Wet | View Details |
| December | 7°C / 1°C | 4°C / -3°C | 25days (220 mm) Wet | 5.6h Fair | 86% Very Muggy | 1.8 Low | Wet | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Tagami are May, June, September, October, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Tagami, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Tagami is August, with average daytime highs of 30°C (86°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Tagami is January, with average overnight lows of -2°C (29°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Tagami is December, averaging 220mm of precipitation across 25 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Tagami runs through January, December, February, November, with the heaviest rainfall in January. Based on 10-year averages for Tagami.
Tagami receives approximately 97 sunshine hours per year. The sunniest month is August with around 10 hours. Based on climate data for Tagami.
The least favorable months to visit Tagami are January, February, March, December, primarily due to very cold temperatures, heavy rainfall. For the best conditions, consider May, June, September, October instead.
The annual average UV index in Tagami is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Tagami is 82%, classified as humid. High humidity makes warm temperatures feel significantly hotter — lightweight, breathable clothing is recommended.
Yes — sea temperatures in July, August, September, October average 27°C (81°F), which is warm and comfortable for swimming and water activities.
Yes, Tagami receives snow. Months with snowfall average 9 snow days and 21 cm (8 in) of accumulation, with about 12 frost days during winter.
Average wind speeds in Tagami are 17 km/h (11 mph). The windiest month is January with peak winds reaching 20 km/h (13 mph) (gusts up to 44 km/h / 27 mph).
Tagami averages 2 clear-sky days per month with overall cloud cover around 68%. The clearest skies occur in May.
The annual average dew point in Tagami is 11°C (52°F), which feels pleasant with low humidity. Outdoor activities are comfortable year-round from a humidity standpoint.
Tagami 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 Tagami ranges from 9°C (48°F) to 17°C (63°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, June is a great time to visit Tagami. It earns a climate score of 8.3/10 with Excellent.
For June in Tagami, pack Umbrella, Waterproof jacket, Breathable clothing, Sunscreen (SPF 30+), Sun hat. With average highs of 25°C (77°F) and 13 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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