10-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Clear sky
24°
Feels like 34°
Wind↑ S 2 km/h
Humidity 91 %
💧 0.1 mm
Evening
Rain
24°
Feels like 35°
Wind↑ W 3 km/h
Humidity 95 %
💧 8.5 mm
⚡ storm
11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Rain showers
23°
Feels like 33°
Wind↑ W 3 km/h
Humidity 96 %
💧 2.5 mm
Evening
Rain
24°
Feels like 34°
Wind↑ N 4 km/h
Humidity 95 %
💧 5.5 mm
⚡ storm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Rain showers
23°
Feels like 33°
Wind↑ SW 4 km/h
Gusts12 km/h
Humidity 97 %
💧 0.2 mm
Evening
Rain
25°
Feels like 35°
Wind↑ NNE 2 km/h
Humidity 93 %
💧 8.1 mm
⚡ storm
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Morning
Rain
23°
Feels like 33°
Wind↑ NNE 4 km/h
Gusts13 km/h
Humidity 98 %
💧 6.0 mm
Evening
Rain showers
24°
Feels like 35°
Wind↑ NNE 3 km/h
Humidity 95 %
💧 4.9 mm
⚡ storm
Dumai 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)
Dumai climate: what a normal year looks like
Every month of the year sees typical highs of 30 °C or more — December, the mildest, still averages 31 °C.
A normal year brings roughly 2,870 mm of rain — more than 97% of the towns of 20,000+ people we compared it with.
Days are almost the same length all year: 12 h 13 min of daylight in late June, 12 h 01 min in late December.
The coming week looks normal for October: forecast highs average 32 °C, against a usual 32 °C.
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
31 °C
24 °C
215 mm
Feb
32 °C
24 °C
138 mm
Mar
32 °C
24 °C
229 mm
Apr
32 °C
25 °C
256 mm
May
33 °C
25 °C
226 mm
Jun
32 °C
25 °C
159 mm
Jul
32 °C
24 °C
165 mm
Aug
32 °C
24 °C
199 mm
Sep
31 °C
24 °C
256 mm
Oct
32 °C
24 °C
310 mm
Nov
31 °C
24 °C
382 mm
Dec
31 °C
24 °C
337 mm
Whole year
32 °C
24 °C
2,870 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 1.67° N, 101.44° 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 Dumai: pollution and pollen
1/6
Good
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.57µg/m³
PM107µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Dumai
Rain observed over the last two hours by official weather radars around Dumai, followed by the radar forecast for the next hour where the weather service provides one.
Rain radarLast two hours, then forecast where available · drag the timeline
No open weather radar covers Dumai yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Dumai
Waning gibbous
79 % illuminated · 19.3 days
Rise 20:59 Set 08:43
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Wed11/113%
Moonrise and moonset in local time (Asia/Jakarta); phase and lit fraction from a synodic calculation.
Look up a past day in Dumai
Curious about the weather in Dumai on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Dumai weather at a glance
This page gathers everything about the weather in Dumai, Riau: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “heavy rain”, it is 25 °C (feels like 36 °C) and the wind blows at 2 km/h.
Expected range today: 22 °C to 33 °C and around 15 mm of rain; keep an eye on thunderstorms. 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.
Use the Dumai 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.
