Cities / Japan / Saitama

25°

☁️ Kōyama weather

Overcast. No rain expected in the next few hours.

Feels like 29° Wind 5 km/h N Humidity 78% UV 6 Air Good ☀ 05:12 - 18:13

Right now it is 25° in Kōyama with overcast skies, it feels more like 29°, today's high is 26° with an overnight low of 20° and about 6 mm of rain is expected. The sun rises at 05:12 and sets at 18:13, giving 13h 01m of daylight. Over the coming week highs range from 20° to 34°.

Kōyama is in Saitama, Japan, sitting 46 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

22° 26° 30° 29° 23° 19:00 · 25.1° · 0 mm 20:00 · 24.7° · 0 mm 21:00 · 24.4° · 0 mm 22:00 · 24.3° · 0 mm 23:00 · 24° · 0 mm 00:00 · 23.2° · 1 mm 01:00 · 23.3° · 0.3 mm 02:00 · 23.2° · 0 mm 03:00 · 23.1° · 0 mm 04:00 · 23° · 0 mm 05:00 · 22.9° · 0 mm 06:00 · 23.2° · 0 mm 07:00 · 24° · 0 mm 08:00 · 24.9° · 0 mm 09:00 · 25.5° · 0 mm 10:00 · 26.3° · 0 mm 11:00 · 27.6° · 0 mm 12:00 · 29° · 0 mm 13:00 · 29.3° · 0 mm 14:00 · 28.6° · 0.1 mm 15:00 · 28.1° · 0.1 mm 16:00 · 27.7° · 0.1 mm 17:00 · 27.2° · 0.1 mm 18:00 · 26.7° · 0.1 mm

Precipitation

19:00 · 0 mm 19:00 20:00 · 0 mm 21:00 · 0 mm 22:00 · 0 mm 22:00 23:00 · 0 mm 00:00 · 1 mm 01:00 · 0.3 mm 01:00 02:00 · 0 mm 03:00 · 0 mm 04:00 · 0 mm 04:00 05:00 · 0 mm 06:00 · 0 mm 07:00 · 0 mm 07:00 08:00 · 0 mm 09:00 · 0 mm 10:00 · 0 mm 10:00 11:00 · 0 mm 12:00 · 0 mm 13:00 · 0 mm 13:00 14:00 · 0.1 mm 15:00 · 0.1 mm 16:00 · 0.1 mm 16:00 17:00 · 0.1 mm 18:00 · 0.1 mm

Hour by hour

TIMETEMPFEELSRAINCONDITIONS
19:00 ☁️ 25.1° 28.3° - Overcast
20:00 ⛅ 24.7° 28° - Partly cloudy
21:00 ⛅ 24.4° 28° - Partly cloudy
22:00 ⛅ 24.3° 28.1° - Partly cloudy
23:00 🌤️ 24° 27.8° - Mostly clear
00:00 🌧️ 23.2° 26.7° 1 mm Rain
01:00 🌦️ 23.3° 26.9° 0.3 mm Light rain
02:00 🌤️ 23.2° 26.9° - Mostly clear
03:00 ☀️ 23.1° 26.8° - Clear sky
04:00 ☀️ 23° 26.7° - Clear sky
05:00 ☀️ 22.9° 26.4° - Clear sky
06:00 🌤️ 23.2° 26.9° - Mostly clear

Next 16 days

Today🌧️ 26°20°6mm Mon 31🌧️ 29°23°2mm Tue 1⛅ 32°24° Wed 2☀️ 34°25°0.2mm Thu 3🌧️ 34°25°5.5mm Fri 4🌧️ 24°20°36.7mm Sat 5🌧️ 20°18°51mm Sun 6🌦️ 23°18°0.9mm Mon 7☁️ 23°19°0.3mm Tue 8⛅ 28°19° Wed 9☀️ 30°21° Thu 10☀️ 33°23° Fri 11☀️ 32°23° Sat 12⛅ 30°22° Sun 13🌤️ 32°23° Mon 14☁️ 25°23°0.3mm
🌧️ TodayAugust 30th Avg 23° Low 20° at 08:00 High 26° at 16:00 6 mm rain Feels 29° Wind ~7 km/h
Rain Rain Partly Cloudy
00:00 20°
02:00 20° 0.4mm
04:00 20°
06:00 20° 0.8mm
08:00 20° 1.3mm
10:00 21° 0.1mm
12:00 22° 0.3mm
14:00 25° 0.4mm
16:00 26°
18:00 26°
20:00 25°
22:00 24°
🌧️ MondayAugust 31st Avg 26° Low 23° at 05:00 High 29° at 13:00 2 mm rain Feels 33° Wind ~13 km/h
Clear Cloudy Rain
00:00 23° 1mm
02:00 23°
04:00 23°
06:00 23°
08:00 25°
10:00 26°
12:00 29°
14:00 29° 0.1mm
16:00 28° 0.1mm
18:00 27° 0.1mm
20:00 25° 0.1mm
22:00 25°
⛅ TuesdaySeptember 1st Avg 27° Low 24° at 05:00 High 32° at 15:00 Wind ~12 km/h
Cloudy Clear Cloudy Clear
00:00 25°
02:00 24°
04:00 24°
06:00 24°
08:00 25°
10:00 28°
12:00 30°
14:00 32°
16:00 31°
18:00 30°
20:00 28°
22:00 27°
☀️ WednesdaySeptember 2nd Avg 29° Low 25° at 05:00 High 34° at 15:00 0.2 mm rain Feels 36° Wind ~18 km/h
Clear Clear Clear
00:00 26°
02:00 26°
04:00 25°
06:00 25°
08:00 27°
10:00 30°
12:00 32°
14:00 34°
16:00 33°
18:00 30° 0.1mm
20:00 28°
22:00 28°
🌧️ ThursdaySeptember 3rd Avg 29° Low 25° at 23:00 High 34° at 14:00 5.5 mm rain Wind ~18 km/h
Cloudy Rain Rain
00:00 27°
02:00 26°
04:00 26°
06:00 26°
08:00 28°
10:00 30°
12:00 33°
14:00 34°
16:00 33° 0.1mm
18:00 30° 0.9mm
20:00 28° 1.2mm
22:00 26° 1.6mm
🌧️ FridaySeptember 4th Avg 22° Low 20° at 22:00 High 24° at 00:00 36.7 mm rain Feels 26° Wind ~16 km/h
Rain
00:00 24° 1.2mm
02:00 24° 1.6mm
04:00 23° 1.3mm
06:00 23° 0.9mm
08:00 23° 0.5mm
10:00 22° 0.4mm
12:00 22° 0.4mm
14:00 22° 0.2mm
16:00 21° 1.5mm
18:00 21° 1.5mm
20:00 20° 4.2mm
22:00 20° 3.9mm
🌧️ SaturdaySeptember 5th Avg 19° Low 18° at 23:00 High 20° at 00:00 51 mm rain Feels 22° Wind ~12 km/h
Rain Cloudy
00:00 20° 3.9mm
02:00 20° 2.7mm
04:00 20° 2.9mm
06:00 20° 2.9mm
08:00 19° 4.4mm
10:00 19° 3.8mm
12:00 19° 3.8mm
14:00 19° 1.7mm
16:00 19° 0.2mm
18:00 19° 0.2mm
20:00 19°
22:00 18°
🌦️ SundaySeptember 6th Avg 21° Low 18° at 05:00 High 23° at 15:00 0.9 mm rain Wind ~12 km/h
Clear Rain Cloudy
00:00 18°
02:00 18°
04:00 18°
06:00 18°
08:00 20° 0.1mm
10:00 21° 0.1mm
12:00 23° 0.1mm
14:00 23° 0.1mm
16:00 23°
18:00 23°
20:00 22°
22:00 21°
☁️ MondaySeptember 7th Avg 21° Low 19° at 04:00 High 23° at 15:00 0.3 mm rain Wind ~7 km/h
Rain Cloudy
00:00 20°
02:00 19° 0.1mm
04:00 19°
06:00 19°
08:00 19°
10:00 21°
12:00 22°
14:00 23°
16:00 23°
18:00 22°
20:00 22°
22:00 21°
⛅ TuesdaySeptember 8th Avg 23° Low 19° at 05:00 High 28° at 15:00 Wind ~8 km/h
Cloudy Partly Cloudy Cloudy Partly Cloudy Cloudy
00:00 21°
02:00 20°
04:00 19°
06:00 20°
08:00 22°
10:00 24°
12:00 26°
14:00 28°
16:00 28°
18:00 26°
20:00 25°
22:00 24°
☀️ WednesdaySeptember 9th Avg 26° Low 21° at 05:00 High 30° at 15:00 Wind ~10 km/h
Clear
00:00 23°
02:00 22°
04:00 21°
06:00 21°
08:00 24°
10:00 26°
12:00 28°
14:00 30°
16:00 30°
18:00 29°
20:00 27°
22:00 25°
☀️ ThursdaySeptember 10th Avg 27° Low 23° at 05:00 High 33° at 15:00 Wind ~21 km/h
Clear Partly Cloudy
00:00 24°
02:00 23°
04:00 23°
06:00 23°
08:00 26°
10:00 29°
12:00 31°
14:00 32°
16:00 32°
18:00 30°
20:00 28°
22:00 26°
☀️ FridaySeptember 11th Avg 27° Low 23° at 05:00 High 32° at 15:00 Wind ~17 km/h
Clear
00:00 25°
02:00 24°
04:00 23°
06:00 23°
08:00 26°
10:00 29°
12:00 31°
14:00 32°
16:00 32°
18:00 29°
20:00 26°
22:00 25°
⛅ SaturdaySeptember 12th Avg 26° Low 22° at 05:00 High 30° at 15:00 Wind ~14 km/h
Clear Partly Cloudy Cloudy
00:00 24°
02:00 23°
04:00 22°
06:00 22°
08:00 24°
10:00 27°
12:00 29°
14:00 30°
16:00 29°
18:00 27°
20:00 26°
22:00 25°
🌤️ SundaySeptember 13th Avg 27° Low 23° at 05:00 High 32° at 15:00 Wind ~19 km/h
Partly Cloudy Clear Clear
00:00 24°
02:00 23°
04:00 23°
06:00 23°
08:00 25°
10:00 28°
12:00 31°
14:00 32°
16:00 31°
18:00 28°
20:00 26°
22:00 25°
☁️ MondaySeptember 14th Avg 24° Low 23° at 09:00 High 25° at 00:00 0.3 mm rain Feels 27° Wind ~14 km/h
Cloudy Rain Cloudy
00:00 25°
02:00 24°
04:00 24° 0.1mm
06:00 23° 0.1mm
08:00 23°
10:00 23°
12:00 23°
14:00 24°
16:00 24°
18:00 24°
20:00 24°
22:00 24°

Sun

☀️ Sunrise 05:12 · Sunset 18:13

13h 01m of daylight · Asia/Tokyo

Air quality

PM2.5 9.3 µg/m³ - Good

No reason to change your plans - open the windows.

Source: Copernicus CAMS, updated hourly.

Nearby

Imajuku · 1 km Tsurumai · 1.9 km Kawakado · 2.5 km Sakado · 3.2 km Hatoyama · 3.2 km Iwai · 3.5 km

Tools for Kōyama

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

Common questions about Kōyama weather

Will it rain in Kōyama today?

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

What is the temperature in Kōyama right now?

It is 25° in Kōyama right now, though it feels closer to 29°. Today runs between a low of 20° and a high of 26°.

What time is sunrise and sunset in Kōyama?

The sun rises at 05:12 and sets at 18:13 local time in Kōyama today, giving 13h 01m of daylight.

What is the air quality in Kōyama?

PM2.5 in Kōyama is currently 9.3 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 Kōyama 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 Kōyama 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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