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Indianapolis weather in August 2025
Expect 29°C daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Indianapolis in August. Check more long-term weather averages for Indianapolis in August before you book your next holiday to Indiana in 2025/2026.
- 29°C max day temperature
29 - 9 hours of sunshine per day
- 9 days with some rainfall
9 - 17°C min night temperature
17 - 14 hours of daylight per day
14 - Moderate heat & humidity
M - 93 mm of monthly rainfall
93 - 8 (Very High) UV index
8
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Recommended for Indiana
The August weather guide for Indiana (Indianapolis) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Indianapolis in August?
Daytime temperatures usually reach 29°C in Indianapolis in August with moderate heat and humidity, falling to 17°C at night.
How sunny is it in Indianapolis in August?
There are normally 9 hours of bright sunshine each day in Indianapolis in August - that's 65% of daylight hours.
Does it rain in Indianapolis in August?
There are usually 9 days with some rain in Indianapolis in August and the average monthly rainfall is 93mm.
Indianapolis August sunrise & sunset times
Browse the sunrise and sunset times for Indianapolis in August 2025. Select a month to view Indianapolis sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Friday, 1st August 2025 | 05:44 | 19:57 |
| Saturday, 16th August 2025 | 05:58 | 19:39 |
| Sunday, 31st August 2025 | 06:12 | 19:17 |
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