Riau weather in July

July is a fair month to visit Riau: highs of 29°C (84°F) and about 168 mm (6.6 in) of rain on average. Nights average 27°C (81°F) and cloud cover 75% (NASA POWER, 2001–2025 averages). The sea averages 30°C (87°F). It is the 5th driest month of the year and the 6th coolest. Compared with June, it is about as warm and about as wet; August brings highs of 29°C (84°F) and 166 mm (6.5 in) of rain.

Figures are long-term averages for Batam, the largest city in Riau. See below for other places.

Is July a good time to visit Riau?

fair month Weather score 57/100.

July is a fair month in Riau. The weather is usually best in Feb, Jun, Aug.

See Riau's sky and forecast now

Does it rain a lot in Riau in July?

Yes, it is one of the rainy months: about 168 mm (6.6 in) falls in an average July. It is the 5th driest month of the year.

How warm is Riau in July?

Days average 29°C (84°F) and nights 27°C (81°F).

Riau weather by month

Month	High	Low	Rain	Cloud	Sea	Weather
January	28°C (83°F)	25°C (78°F)	236 mm	79%	28°C (83°F)	fair
February	29°C (84°F)	25°C (78°F)	108 mm	72%	29°C (83°F)	best
March	29°C (85°F)	26°C (79°F)	177 mm	69%	29°C (85°F)	fair
April	30°C (85°F)	27°C (81°F)	203 mm	71%	31°C (87°F)	fair
May	30°C (86°F)	28°C (82°F)	202 mm	72%	31°C (88°F)	fair
June	29°C (85°F)	28°C (82°F)	164 mm	74%	31°C (88°F)	best
July	29°C (84°F)	27°C (81°F)	168 mm	75%	30°C (87°F)	fair
August	29°C (84°F)	27°C (80°F)	166 mm	74%	30°C (86°F)	best
September	29°C (84°F)	27°C (80°F)	165 mm	79%	30°C (86°F)	fair
October	29°C (84°F)	27°C (80°F)	206 mm	82%	30°C (86°F)	fair
November	29°C (83°F)	27°C (80°F)	294 mm	85%	31°C (87°F)	least pleasant
December	28°C (83°F)	26°C (79°F)	302 mm	88%	29°C (85°F)	least pleasant

Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated Oct 31, 2026. How we rate months