Erimo, Japan experiences average highs of 11°C (52°F) and lows of 7°C (45°F) throughout the year. Rainfall is moderate, averaging about 11 rainy days per month. Average highs have warmed by 1.3°C (2.3°F) across the available records.
Erimo, Japan Weather & Climate 2026
Monthly climate averages for Erimo, Japan. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jan–Dec 
Wetter season: Apr–Oct At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
4.7/10
Best: June, July, August, September
UV Index
5
Low
Temperature 11°C / 7°C
Feels Like 9°C / 5°C
Rainy Days 11
Rainfall 110 mm
Sunshine 8 h
Humidity 79%
Wind Speed 20 km/h
Dew Point 6°C
Snow Days 9 days
Frost Days 15 days
Hottest Month
22°C
August
Avg Low 20°C
Rain 16 days
Coldest Month
-4°C
February
Avg High 0°C
Rain 9 days
Driest Month
9 days
January
Avg High 1°C
Avg Low -3°C
Windiest Month
23 km/h
November (Gusts 50)
Sea Temperature
2°C – 22°C
Warmest water: August (
22.3°C
)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures.
Sun Position
Sunrise 04:05
Daylight 15h
Sunset 19:02
Live conditions —
Erimo on the map · live conditions
Erimo, Japan
- Continent
- Asia
- Country
- Japan
- City
- Erimo
- Population
- 4.4K
- Coordinates
- 42.02°, 143.15°
Seasonal Breakdown
Spring
Mar–May
Avg High 7°C
Avg Low 4°C
Rain 11 days/mo
Summer
Jun–Aug
Avg High 19°C
Avg Low 16°C
Rain 12 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 15°C
Avg Low 12°C
Rain 11 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 2°C
Avg Low -2°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: 1°C / -3°C . Feb: 0°C / -4°C . Mar: 3°C / 0°C . Apr: 7°C / 4°C . May: 11°C / 8°C . Jun: 15°C / 12°C . Jul: 19°C / 17°C . Aug: 22°C / 20°C . Sep: 20°C / 18°C . Oct: 15°C / 12°C . Nov: 10°C / 6°C . Dec: 4°C / 0°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 59 mm. Feb: 61 mm. Mar: 101 mm. Apr: 107 mm. May: 89 mm. Jun: 107 mm. Jul: 107 mm. Aug: 209 mm. Sep: 164 mm. Oct: 149 mm. Nov: 93 mm. Dec: 78 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 70%. Feb: 72%. Mar: 79%. Apr: 82%. May: 86%. Jun: 90%. Jul: 92%. Aug: 90%. Sep: 83%. Oct: 72%. Nov: 67%. Dec: 67%.
Monthly Wind Speed
Wind Speed Gusts
Bar chart showing monthly wind speed. Jan: 21 km/h . Feb: 22 km/h . Mar: 21 km/h . Apr: 21 km/h . May: 19 km/h . Jun: 16 km/h . Jul: 14 km/h . Aug: 17 km/h . Sep: 17 km/h . Oct: 21 km/h . Nov: 23 km/h . Dec: 23 km/h .
Sunshine
Sunshine
Sunshine: Jan: 7h. Feb: 8h. Mar: 9h. Apr: 9h. May: 10h. Jun: 10h. Jul: 9h. Aug: 8h. Sep: 8h. Oct: 8h. Nov: 7h. Dec: 7h.
Sea Temperature
Sea Temperature swim
Line chart showing monthly sea temperature. Jan: 4°C . Feb: 2°C . Mar: 2°C . Apr: 4°C . May: 8°C . Jun: 13°C . Jul: 17°C . Aug: 22°C . Sep: 21°C . Oct: 17°C . Nov: 13°C . Dec: 8°C .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 5. Apr: UV 5. May: UV 6. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 4. Nov: UV 3. Dec: UV 2.
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: 13 days. Feb: 13 days. Mar: 10 days. Apr: 6 days. May: 0 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 0 days. Nov: 3 days. Dec: 11 days.
Climate Trends
Average highs have warmed by 1.3°C (2.3°F) across the available records. Average rainfall is trending drier by about 19 mm.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Aug 2025 · 24°C | Aug · 22°C |
| Coldest month | Feb 2025 · -2°C | Feb · -4°C |
| Wettest month | Sep 2025 · 254 mm | Aug · 209 mm |
| Windiest month | Dec 2025 · 25 km/h | Nov · 23 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Fair June best
Good July best
Excellent August best
Excellent September best
Excellent October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 1°C / -3°C | -4°C / -8°C | 9days (59 mm) Wet | 7.4h Good | 70% Muggy | 2.4 Moderate | Poor | View Details |
| February | 0°C / -4°C | -4°C / -9°C | 9days (61 mm) Wet | 8.3h Good | 72% Muggy | 3.4 Moderate | Poor | View Details |
| March | 3°C / 0°C | 0°C / -4°C | 10days (101 mm) Wet | 9.1h Good | 79% Humid | 4.6 Moderate | Poor | View Details |
| April | 7°C / 4°C | 4°C / 0°C | 12days (107 mm) Wet | 9.3h Good | 82% Humid | 5.1 High | Poor | View Details |
| May | 11°C / 8°C | 9°C / 5°C | 12days (89 mm) Wet | 9.9h Good | 86% Very Muggy | 6 High | Fair | View Details |
| June best | 15°C / 12°C | 15°C / 11°C | 11days (107 mm) Wet | 9.5h Good | 90% Very Muggy | 6.5 High | Good | View Details |
| July best | 19°C / 17°C | 21°C / 18°C | 10days (107 mm) Wet | 8.9h Good | 92% Very Muggy | 6.5 High | Excellent | View Details |
| August best | 22°C / 20°C | 24°C / 21°C | 16days (209 mm) Wet | 7.6h Good | 90% Very Muggy | 6 High | Excellent | View Details |
| September best | 20°C / 18°C | 22°C / 18°C | 12days (164 mm) Wet | 8.2h Good | 83% Humid | 5.2 High | Excellent | View Details |
| October | 15°C / 12°C | 14°C / 10°C | 11days (149 mm) Wet | 7.7h Good | 72% Muggy | 3.8 Moderate | Good | View Details |
| November | 10°C / 6°C | 7°C / 2°C | 10days (93 mm) Wet | 7.1h Good | 67% Muggy | 2.6 Moderate | Poor | View Details |
| December | 4°C / 0°C | 0°C / -5°C | 10days (78 mm) Wet | 6.6h Fair | 67% Muggy | 2 Low | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Erimo are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Erimo, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Erimo is August, with average daytime highs of 22°C (71°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Erimo is February, with average overnight lows of -4°C (26°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Erimo is August, averaging 209mm of precipitation across 16 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Erimo runs through August, April, May, September, with the heaviest rainfall in August. Based on 10-year averages for Erimo.
Erimo receives approximately 100 sunshine hours per year. The sunniest month is May with around 10 hours. Based on climate data for Erimo.
The least favorable months to visit Erimo are January, February, March, December, primarily due to very cold temperatures. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Erimo is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Erimo is 79%, classified as humid. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes — sea temperatures in August average 22°C (72°F), which is warm and comfortable for swimming and water activities.
Yes, Erimo receives snow. Months with snowfall average 9 snow days and 26 cm (10 in) of accumulation, with about 15 frost days during winter.
Average wind speeds in Erimo are 20 km/h (12 mph). The windiest month is November with peak winds reaching 23 km/h (15 mph) (gusts up to 50 km/h / 31 mph).
Erimo averages 5 clear-sky days per month with overall cloud cover around 58%. The clearest skies occur in January.
The annual average dew point in Erimo is 6°C (43°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Erimo has a Oceanic climate, classified as Cfb 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 Erimo ranges from 5°C (41°F) to 9°C (48°F) on average. The 'feels like' temperature closely matches the actual temperature throughout most of the year.
Yes, July is a great time to visit Erimo. It earns a climate score of 8.4/10 with Excellent.
For July in Erimo, pack Umbrella, Waterproof jacket, Comfortable walking shoes. With average highs of 19°C (67°F) and 10 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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