Today
Sun, Jun 21
Moderate rain
28°21°
- Rain chance
- 100%
- Precip
- 12.9 mm
- Max wind
- 8 km/h
Narimasu weather forecast
Tokyo, Japan · Tokyo time · 35.78°, 139.63°
Heavy rain Friday: around 52 mm expected.
Heavy rain Friday: around 52 mm expected.
Derived advisory — not an official warning
Current conditions · 8:15 PM local
Current conditions in Narimasu
25°C
Overcast
Feels like 24°C
- Humidity
- 94%
- Wind
- 7 km/h NE
- Gusts
- 34 km/h
- UV index
- 0
- Visibility
- 2.5 km
Right now
Conditions in Narimasu at the moment: overcast, 25 °C. It feels warmer than it reads, more like 29 °C. Wind is from the NE at 7 km/h, gusting to 34 km/h. Humidity stands at 80% with sea-level pressure near 999 hPa.
At a glance
Today
28° / 21°Moderate rain · rain likely (100%)
Tomorrow
29° / 20°Overcast · 33% chance of rain
Upcoming · to Saturday
27° / 17°Highs 27°, lows 17°. The most active day looks like Thursday, when rain chances peak at 91%.
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Next 3 days
Today looks like moderate rain; temperatures run from 21 °C up to 28 °C. Rain chance peaks at 100% with around 12.9 mm possible. Tomorrow looks like overcast; temperatures run from 20 °C up to 29 °C. Rain chance peaks at 33%. Tuesday looks like moderate drizzle; temperatures run from 18 °C up to 26 °C.
Tomorrow
Mon, Jun 22
Overcast
29°20°
- Rain chance
- 33%
- Precip
- 0 mm
- Max wind
- 10 km/h
Tuesday
Tue, Jun 23
Moderate drizzle
26°19°
- Rain chance
- 14%
- Precip
- 1.3 mm
- Max wind
- 8 km/h
Next 48 hours
- 12 AM21°100%7 km/h
- 1 AM21°100%5 km/h
- 2 AM21°100%8 km/h
- 3 AM21°100%4 km/h
- 4 AM21°100%5 km/h
- 5 AM22°100%4 km/h
- 6 AM21°100%5 km/h
- 7 AM21°76%5 km/h
- 8 AM21°43%5 km/h
- 9 AM21°18%7 km/h
- 10 AM22°7%6 km/h
- 11 AM24°4%4 km/h
- 12 PM24°2%7 km/h
- 1 PM26°1%7 km/h
- 2 PM26°1%5 km/h
- 3 PM28°2%6 km/h
- 4 PM28°2%5 km/h
- 5 PM28°1%4 km/h
- 6 PM27°2%2 km/h
- 7 PM26°5%3 km/h
- 8 PM25°8%7 km/h
- 9 PM24°10%5 km/h
- 10 PM24°8%3 km/h
- 11 PM23°5%6 km/h
- 12 AM23°2%5 km/h
- 1 AM22°1%5 km/h
- 2 AM21°0%5 km/h
- 3 AM21°0%4 km/h
- 4 AM21°0%3 km/h
- 5 AM20°0%2 km/h
- 6 AM21°0%3 km/h
- 7 AM22°0%2 km/h
- 8 AM23°0%3 km/h
- 9 AM24°0%2 km/h
- 10 AM25°0%3 km/h
- 11 AM27°1%3 km/h
- 12 PM28°4%5 km/h
- 1 PM29°11%4 km/h
- 2 PM29°21%3 km/h
- 3 PM29°27%7 km/h
- 4 PM28°27%10 km/h
- 5 PM27°25%8 km/h
- 6 PM26°24%8 km/h
- 7 PM25°27%7 km/h
- 8 PM24°32%5 km/h
- 9 PM23°33%3 km/h
- 10 PM22°27%2 km/h
- 11 PM22°18%3 km/h
In depth
Narimasu starts the period under overcast, with the mercury at 25 °C and a feels-like of 29 °C. Today's forecast calls for moderate rain, topping out near 28 °C before falling back to 21 °C overnight. Winds blow mainly from the NE around 8 km/h, with gusts up to 36 km/h. Daytime highs hold fairly steady this week, staying within 23 to 29 °C. Rain is in the picture on today, Tuesday, Thursday and beyond, with roughly 109 mm expected in total across the week. Tomorrow brings overcast with a high of 29 °C and a 33% chance of precipitation. The UV index reaches 7 today, so sun protection is sensible during the middle of the day. Sunrise comes at 04:25 and sunset at 19:00, giving 14.6 hours of daylight. Current humidity sits at 80% with pressure near 999 hPa. Looking further out, Thursday shows moderate rain showers with a high around 23 °C, while Saturday ends the week at 27 °C. Forecast details are refreshed throughout the day as new model runs arrive, so check back for the latest figures.
Air quality
48
Good
US AQI · European AQI 27
Air quality in Narimasu is currently good, with a US AQI of 48 (European AQI 27). The dominant pollutant right now is PM2.5. Air quality is healthy; no precautions needed. Fine particulate matter (PM2.5) measures 29.3 µg/m³.
Pollutants
- PM2.5
- 29.3 µg/m³
- PM10
- 29.6 µg/m³
- Ozone (O₃)
- 26 µg/m³
- NO₂
- 58.2 µg/m³
- SO₂
- 32.8 µg/m³
- CO
- 129 µg/m³
- Dust
- 0 µg/m³
Sun & UV
- Sunrise
- 4:25 AM
- Sunset
- 7:00 PM
- Daylight
- 14h 35m
- Max UV
- 7.45 High
Wind
- Wind
- 7 km/h
- Gusts
- 34 km/h
- Direction
- NE (54°)
Farming weather
Soil temperatures today read surface 20.4 °C, 6 cm 23.6 °C, 18 cm 24.4 °C, 54 cm 22.3 °C. Soil moisture sits at 0-1 cm at 0.34 m³/m³, 3-9 cm at 0.34 m³/m³, 27-81 cm at 0.37 m³/m³. For wheat, the root-zone reading is within the ideal 0.2-0.35 m³/m³ band. Forecast rain (109 mm) roughly covers crop water demand (ET0 22 mm), so irrigation can likely be paused. A suitable spraying window opens around 08:00 on 2026-06-21, with winds at or below 15 km/h and no rain expected. Projected growing degree days over the next week: wheat 130, maize 91.
- Topsoil moisture
- 0.356 m³/m³
- Soil temp
- 21°C
- ET₀ today
- 2.81 mm
- Spray window
- ~5:00
- Rain (next 7d)
- 108.7 mm
- Wind
- 7 km/h
- Humidity
- 94%
Advisory summary
Weather alerts for Narimasu (derived from forecast data, not official warnings): Heavy rain Friday: around 52 mm expected.
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All data for Narimasu
| Variable | Value |
|---|---|
| City | Narimasu, Tokyo, Japan |
| Coordinates | 35.78355, 139.6323 |
| Elevation | 29 m |
| Timezone | Asia/Tokyo |
| Population | 30,203 |
| Observed at (local) | 8:15 PM |
| Temperature (2 m) | 25°C |
| Apparent temperature | 24°C |
| Relative humidity (2 m) | 94% |
| Dew point (2 m) | 20°C |
| Precipitation (last hour) | 0 mm |
| Rain | 0 mm |
| Showers | 0 mm |
| Snowfall | 0 cm |
| Weather code (WMO) | 3 |
| Cloud cover | 95% |
| Surface pressure | 996 hPa |
| Sea-level pressure | 999 hPa |
| Wind speed (10 m) | 7 km/h |
| Wind gusts (10 m) | 34 km/h |
| Wind direction (10 m) | 54° (NE) |
| Visibility | 2.5 km |
| UV index | 0 |
| Day / night | Night |
| Today max / min | 28°C / 21°C |
| Today feels-like max / min | 32°C / 24°C |
| Today precipitation sum | 12.9 mm |
| Today rain sum | 12.9 mm |
| Today snowfall sum | 0 cm |
| Today max precip probability | 100% |
| Today max wind / gusts | 8 km/h / 36 km/h |
| Dominant wind direction | 38° (NE) |
| Sunrise / sunset | 4:25 AM / 7:00 PM |
| Daylight duration | 14h 35m |
| Sunshine duration | 5h 39m |
| Max UV index | 7.45 |
| Reference evapotranspiration (ET₀) | 2.81 mm |
| Topsoil moisture (0–1 cm) | 0.356 m³/m³ |
| Surface soil temperature | 21°C |
| US AQI | 48 |
| European AQI | 27 |
| PM2.5 | 29.3 µg/m³ |
| PM10 | 29.6 µg/m³ |
| Ozone (O₃) | 26 µg/m³ |
| Nitrogen dioxide (NO₂) | 58.2 µg/m³ |
| Sulphur dioxide (SO₂) | 32.8 µg/m³ |
| Carbon monoxide (CO) | 129 µg/m³ |
| Dust | 0 µg/m³ |
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<iframe src="https://weathertomorrow.cloud/embed/city/jp/tokyo/narimasu" width="320" height="180" frameborder="0" title="Narimasu weather" loading="lazy"></iframe>Frequently asked questions
Will it rain in Narimasu tomorrow?
There is a moderate chance of rain in Narimasu tomorrow, peaking at 33%.
What is the temperature in Narimasu today?
Today Narimasu sees moderate rain with a high of 28 °C and a low of 21 °C.
How hot will it be in Narimasu tomorrow?
Tomorrow's high in Narimasu is forecast at 29 °C with overcast.
Is it windy in Narimasu today?
No, not especially; gusts only reach up to 36 km/h today.
What is the UV index in Narimasu today?
The UV index peaks at 7 today, which is high.
What time is sunrise and sunset in Narimasu today?
The sun rises at 04:25 and sets at 19:00 local time.
Is the air quality in Narimasu good today?
Air quality is good right now, with a US AQI reading of 48.