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Nagasaki weather

Nagasaki · 409,118 inhabitants · Friday, October 30 · updated 04:08

Rain around 05:08 Air: Fair

19°

Rain

Feels like 19°C

Wind

11 km/h

Gusts

41 km/h

Humidity

87 %

Pressure

1019 hPa

Clouds

100 %

Storm

Rise 06:36 Set 17:32 Day 10 h 55 min UV 5 · Moderate

Morning, afternoon, evening

Trend

Night

Rain

19°

Feels like 19°

Wind ↑ SW 16 km/h

Gusts 41 km/h

Humidity 87 %

💧 15.1 mm

Morning

Light rain

20°19°

Feels like 20°

Wind ↑ WSW 20 km/h

Gusts 36 km/h

Humidity 90 %

💧 5.7 mm

Afternoon

Rain showers

22°20°

Feels like 26°

Wind ↑ NW 13 km/h

Gusts 26 km/h

Humidity 70 %

💧 4.9 mm

Evening

Clear sky

18°17°

Feels like 18°

Wind ↑ NW 11 km/h

Gusts 23 km/h

Humidity 73 %

09:00

20°

4.6mm

WSW 10

12:00

20°

2.4mm

NW 13

15:00

22°

2.5mm

WNW 13

18:00

17°

NW 9

21:00

18°

NW 11

00:00

15°

NNW 4

03:00

17°

NW 14

06:00

14°

NNW 7

Nagasaki forecast in charts · next 7 days

The week ahead: highs and lows

≈ A week close to the usual temperatures

Highs Lows Usual for the season (1991–2020 average)

Hourly detail

Temperature (°C) Rain (mm) Wind (km/h)

Nagasaki climate: what a normal year looks like

A normal year brings roughly 2,230 mm of rain — more than 91% of the towns of 20,000+ people we compared it with.

The hottest stretch is August, when afternoons average 29 °C; the coldest is January, when nights average 6 °C. Between those two months the average temperature changes by 19 °C.

From 14 h 18 min of daylight in late June to 9 h 59 min in late December.

Afternoons climb to 25 °C only from July to September, with a typical peak of 29 °C in August.

Forecast highs for the coming week average 21 °C, 1 °C cooler than a normal October (22 °C).

30-year averages (1991–2020)
Month	Typical high	Typical low	Rainfall
Jan	9 °C	6 °C	87 mm
Feb	11 °C	7 °C	106 mm
Mar	13 °C	9 °C	152 mm
Apr	17 °C	13 °C	171 mm
May	21 °C	17 °C	196 mm
Jun	24 °C	21 °C	455 mm
Jul	27 °C	24 °C	348 mm
Aug	29 °C	26 °C	192 mm
Sep	27 °C	23 °C	209 mm
Oct	22 °C	18 °C	110 mm
Nov	17 °C	14 °C	108 mm
Dec	12 °C	8 °C	97 mm
Whole year	19 °C	15 °C	2,230 mm

Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 32.75° N, 129.88° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.

Air you breathe in Nagasaki: pollution and pollen

2/6

Fair

European Air Quality Index (EAQI), from Copernicus CAMS

PM2.511µg/m³

PM1014µg/m³

Copernicus CAMS model, updated several times a day.

Rain radar around Nagasaki

Rain observed over the last two hours by official weather radars around Nagasaki, followed by the radar forecast for the next hour where the weather service provides one.

Full-screen rain radar and next-hour rain on RainAtlas

Rain radar Last two hours, then forecast where available · drag the timeline

No open weather radar covers Nagasaki yet: the map shows our hour-by-hour rain forecast (ICON, GFS).

Moon over Nagasaki

Waning gibbous

79 % illuminated · 19.3 days

Rise 15:49 Set 05:59

Sat 31/10 69%

Sun 1/11 59%

Mon 2/11 49% Last quarter

Tue 3/11 38%

Wed 4/11 28%

Thu 5/11 19%

Fri 6/11 12%

Sat 7/11 6%

Sun 8/11 2%

Mon 9/11 0%

Tue 10/11 1% New moon

Wed 11/11 3%

Moonrise and moonset in local time (Asia/Tokyo); phase and lit fraction from a synodic calculation.

Look up a past day in Nagasaki

Curious about the weather in Nagasaki on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.

Nagasaki weather at a glance

This page gathers everything about the weather in Nagasaki, Nagasaki: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “rain”, it is 19 °C (feels like 19 °C) and the wind blows at 11 km/h.

Expected range today: 14 °C to 22 °C and around 10 mm of rain. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.

Other big cities nearby

Nagasaki weather data for developers

Use the Nagasaki forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.

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Where does this forecast come from? Our engine, checked every day against 1125 weather stations