Cities / Japan / Nagano

23°

☁️ Seiman weather

Overcast. Light rain starting around 4:15pm.

Feels like 25° Wind 13 km/h E Humidity 71% UV 0 Air Good ☀ 05:02 - 18:39

Right now it is 23° in Seiman with overcast skies, today's high is 23° with an overnight low of 16° and about 6 mm of rain is expected. The sun rises at 05:02 and sets at 18:39, giving 13h 37m of daylight. Over the coming week highs range from 22° to 30°.

Seiman is in Nagano, Japan, sitting 952 m above sea level. Local time is Asia/Tokyo (UTC+9), and every time on this page is shown in it.

Next 24 hours - temperature

17° 21° 24° 24° 18° 14:00 · 23.2° · 0 mm 15:00 · 23° · 0 mm 16:00 · 22.2° · 0 mm 17:00 · 20.8° · 0.3 mm 18:00 · 18.9° · 2.1 mm 19:00 · 18° · 2.3 mm 20:00 · 18° · 0.4 mm 21:00 · 18.1° · 0 mm 22:00 · 18° · 0 mm 23:00 · 18.1° · 0 mm 00:00 · 18.1° · 0.1 mm 01:00 · 18° · 0.1 mm 02:00 · 17.9° · 0.1 mm 03:00 · 17.8° · 0.1 mm 04:00 · 17.8° · 0 mm 05:00 · 17.9° · 0 mm 06:00 · 18° · 0 mm 07:00 · 18.2° · 0 mm 08:00 · 18.4° · 0 mm 09:00 · 18.5° · 0 mm 10:00 · 18.8° · 0 mm 11:00 · 19.2° · 0.1 mm 12:00 · 21.9° · 0 mm 13:00 · 23.8° · 0 mm

Precipitation

14:00 · 0 mm 14:00 15:00 · 0 mm 16:00 · 0 mm 17:00 · 0.3 mm 17:00 18:00 · 2.1 mm 19:00 · 2.3 mm 20:00 · 0.4 mm 20:00 21:00 · 0 mm 22:00 · 0 mm 23:00 · 0 mm 23:00 00:00 · 0.1 mm 01:00 · 0.1 mm 02:00 · 0.1 mm 02:00 03:00 · 0.1 mm 04:00 · 0 mm 05:00 · 0 mm 05:00 06:00 · 0 mm 07:00 · 0 mm 08:00 · 0 mm 08:00 09:00 · 0 mm 10:00 · 0 mm 11:00 · 0.1 mm 11:00 12:00 · 0 mm 13:00 · 0 mm

Hour by hour

TIMETEMPFEELSRAINCONDITIONS
14:00 ☁️ 23.2° 23.4° - Overcast
15:00 ☁️ 23° 23.1° - Overcast
16:00 🌤️ 22.2° 22.5° - Mostly clear
17:00 🌦️ 20.8° 21.5° 0.3 mm Light rain
18:00 🌧️ 18.9° 19.8° 2.1 mm Rain
19:00 🌧️ 18° 18.8° 2.3 mm Rain
20:00 🌦️ 18° 19° 0.4 mm Light rain
21:00 ☁️ 18.1° 19.4° - Overcast
22:00 ☁️ 18° 19.4° - Overcast
23:00 ☁️ 18.1° 19.3° - Overcast
00:00 🌦️ 18.1° 19.6° 0.1 mm Light rain
01:00 🌦️ 18° 19.3° 0.1 mm Light rain

Next 16 days

Today🌧️ 23°16°6mm Fri 14🌦️ 24°18°2.6mm Sat 15🌦️ 23°18°2.2mm Sun 16⛅ 22°16° Mon 17☁️ 26°15° Tue 18🌤️ 28°16° Wed 19🌧️ 30°19°4.5mm Thu 20🌧️ 28°19°6.3mm Fri 21🌧️ 24°19°27.9mm Sat 22🌧️ 22°18°14mm Sun 23🌧️ 18°15°35.2mm Mon 24☀️ 28°15° Tue 25🌦️ 28°18°4.5mm Wed 26🌧️ 26°19°8.9mm Thu 27☁️ 19°17°0.1mm Fri 28🌦️ 23°17°0.6mm
🌧️ TodayAugust 13th Avg 19° Low 16° at 05:00 High 23° at 14:00 6 mm rain Wind ~13 km/h
Rain Cloudy Rain Rain Cloudy
00:00 17° 0.1mm
02:00 17° 0.1mm
04:00 16° 0.1mm
06:00 17°
08:00 19°
10:00 21° 0.1mm
12:00 20° 0.1mm
14:00 23°
16:00 22°
18:00 19° 2.1mm
20:00 18° 0.4mm
22:00 18°
🌦️ FridayAugust 14th Avg 19° Low 18° at 03:00 High 24° at 13:00 2.6 mm rain Wind ~12 km/h
Rain Cloudy Rain Cloudy
00:00 18° 0.1mm
02:00 18° 0.1mm
04:00 18°
06:00 18°
08:00 18°
10:00 19°
12:00 22°
14:00 23° 0.4mm
16:00 20° 0.1mm
18:00 19°
20:00 18° 0.7mm
22:00 18°
🌦️ SaturdayAugust 15th Avg 19° Low 18° at 23:00 High 23° at 13:00 2.2 mm rain Wind ~12 km/h
Rain Rain
00:00 18° 0.1mm
02:00 18°
04:00 18° 0.1mm
06:00 18°
08:00 18° 0.1mm
10:00 19° 0.1mm
12:00 20° 0.1mm
14:00 22° 0.3mm
16:00 22°
18:00 19° 0.1mm
20:00 18° 0.1mm
22:00 18° 0.2mm
⛅ SundayAugust 16th Avg 19° Low 16° at 23:00 High 22° at 13:00 Wind ~13 km/h
Cloudy Partly Cloudy Cloudy
00:00 17°
02:00 17°
04:00 16°
06:00 16°
08:00 18°
10:00 21°
12:00 21°
14:00 22°
16:00 22°
18:00 20°
20:00 17°
22:00 17°
☁️ MondayAugust 17th Avg 20° Low 15° at 05:00 High 26° at 13:00 Wind ~14 km/h
Cloudy Cloudy Partly Cloudy Cloudy
00:00 16°
02:00 16°
04:00 15°
06:00 16°
08:00 20°
10:00 24°
12:00 25°
14:00 26°
16:00 24°
18:00 21°
20:00 19°
22:00 18°
🌤️ TuesdayAugust 18th Avg 22° Low 16° at 03:00 High 28° at 13:00 Wind ~13 km/h
Cloudy Clear Partly Cloudy
00:00 18°
02:00 17°
04:00 16°
06:00 18°
08:00 22°
10:00 25°
12:00 28°
14:00 28°
16:00 26°
18:00 22°
20:00 21°
22:00 20°
🌧️ WednesdayAugust 19th Avg 23° Low 19° at 04:00 High 30° at 12:00 4.5 mm rain Feels 32° Wind ~13 km/h
Clear Rain
00:00 19°
02:00 19°
04:00 19°
06:00 19°
08:00 23°
10:00 27°
12:00 30°
14:00 29° 0.2mm
16:00 26° 1mm
18:00 22° 1mm
20:00 21° 0.3mm
22:00 21°
🌧️ ThursdayAugust 20th Avg 23° Low 19° at 05:00 High 28° at 12:00 6.3 mm rain Feels 31° Wind ~9 km/h
Clear Rain
00:00 20°
02:00 19°
04:00 19°
06:00 19°
08:00 24°
10:00 27° 0.2mm
12:00 28° 0.2mm
14:00 27° 1.4mm
16:00 25° 0.4mm
18:00 23° 0.4mm
20:00 21° 0.1mm
22:00 20°
🌧️ FridayAugust 21st Avg 21° Low 19° at 04:00 High 24° at 11:00 27.9 mm rain Feels 27° Wind ~7 km/h
Rain
00:00 20°
02:00 19° 0.2mm
04:00 19° 0.6mm
06:00 20° 0.6mm
08:00 22° 1mm
10:00 24° 1.3mm
12:00 24° 1.3mm
14:00 23° 2.8mm
16:00 22° 1.5mm
18:00 20° 1.5mm
20:00 20° 1.3mm
22:00 20° 0.9mm
🌧️ SaturdayAugust 22nd Avg 19° Low 18° at 23:00 High 22° at 09:00 14 mm rain Feels 25° Wind ~7 km/h
Rain
00:00 19° 0.9mm
02:00 19° 0.1mm
04:00 19° 0.2mm
06:00 20° 0.2mm
08:00 21° 0.3mm
10:00 21° 2.4mm
12:00 20° 2.4mm
14:00 20° 0.3mm
16:00 19° 0.1mm
18:00 19° 0.1mm
20:00 18° 0.3mm
22:00 18° 1mm
🌧️ SundayAugust 23rd Avg 17° Low 15° at 23:00 High 18° at 10:00 35.2 mm rain Feels 20° Wind ~8 km/h
Rain Cloudy Clear
00:00 18° 1mm
02:00 17° 1.2mm
04:00 17° 0.7mm
06:00 18° 0.7mm
08:00 18° 3.4mm
10:00 18° 3.1mm
12:00 18° 3.1mm
14:00 18° 3mm
16:00 18°
18:00 17°
20:00 16°
22:00 16°
☀️ MondayAugust 24th Avg 21° Low 15° at 04:00 High 28° at 14:00 Wind ~8 km/h
Clear
00:00 15°
02:00 15°
04:00 15°
06:00 16°
08:00 21°
10:00 25°
12:00 27°
14:00 28°
16:00 26°
18:00 22°
20:00 20°
22:00 19°
🌦️ TuesdayAugust 25th Avg 22° Low 18° at 04:00 High 28° at 12:00 4.5 mm rain Feels 30° Wind ~7 km/h
Clear Partly Cloudy Rain
00:00 19°
02:00 18°
04:00 18°
06:00 18°
08:00 22°
10:00 26°
12:00 28°
14:00 26° 0.4mm
16:00 23° 0.7mm
18:00 22° 0.7mm
20:00 21° 0.4mm
22:00 20°
🌧️ WednesdayAugust 26th Avg 22° Low 19° at 05:00 High 26° at 12:00 8.9 mm rain Feels 29° Wind ~7 km/h
Partly Cloudy Cloudy Rain
00:00 20°
02:00 19°
04:00 19°
06:00 19°
08:00 23°
10:00 25° 0.4mm
12:00 26° 0.4mm
14:00 24° 0.8mm
16:00 23° 1.3mm
18:00 21° 1.3mm
20:00 21° 0.4mm
22:00 20° 0.1mm
☁️ ThursdayAugust 27th Avg 18° Low 17° at 22:00 High 19° at 12:00 0.1 mm rain Feels 21° Wind ~11 km/h
Cloudy
00:00 19° 0.1mm
02:00 19°
04:00 19°
06:00 19°
08:00 19°
10:00 19°
12:00 19°
14:00 19°
16:00 18°
18:00 18°
20:00 17°
22:00 17°
🌦️ FridayAugust 28th Avg 19° Low 17° at 00:00 High 23° at 15:00 0.6 mm rain Wind ~13 km/h
Cloudy Rain Cloudy
00:00 17°
02:00 18°
04:00 17°
06:00 17°
08:00 18°
10:00 18°
12:00 19°
14:00 22° 0.1mm
16:00 23° 0.1mm
18:00 22° 0.1mm
20:00 20°
22:00 20°

Sun

☀️ Sunrise 05:02 · Sunset 18:39

13h 37m of daylight · Asia/Tokyo

Air quality

PM2.5 0.5 µg/m³ - Good

No reason to change your plans - open the windows.

Source: Copernicus CAMS, updated hourly.

Nearby

Miyota · 0.6 km Shiono · 1.6 km Oiwake · 3 km Kusagoe · 3.6 km Hiroto · 3.8 km Shiono · 4.2 km

Tools for Seiman

☔ Will it rain today? 🌅 Sunrise & sunset 🫁 Air quality 📼 Weather on this day

Common questions about Seiman weather

Will it rain in Seiman today?

Yes - about 6 mm of rain is expected in Seiman today.

What is the temperature in Seiman right now?

It is 23° in Seiman right now, though it feels closer to 25°. Today runs between a low of 16° and a high of 23°.

What time is sunrise and sunset in Seiman?

The sun rises at 05:02 and sets at 18:39 local time in Seiman today, giving 13h 37m of daylight.

What is the air quality in Seiman?

PM2.5 in Seiman is currently 0.5 µg/m³, which counts as Good on the European air-quality index. No reason to change your plans - open the windows.

How accurate is the Seiman forecast, and how far ahead does it go?

This page shows 16 days ahead, refreshed every hour. It blends ECMWF, NOAA GFS and whichever national high-resolution model covers Seiman best. The first three days are the dependable part - day one is usually within a degree or two - and accuracy falls off steadily after day five, so read the far end as a trend rather than a plan. We publish our measured error against real station observations on the accuracy page.

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