Indiana weather in August 2025

Expect 84°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Indiana in August. Check more long-term weather averages for Indiana in August before you book your next holiday to Indiana in 2025/2026.

  • 84°F maximum daytime temperature in August in Indiana (Indianapolis)84
    84°F max day temperature
  • 9 hours of sunshine per day
  • 9 days with some rainfall in August in Indiana (Indianapolis)9
    9 days with some rainfall
  • 63°F minimum night-time temperature in August in Indiana (Indianapolis)63
    63°F min night temperature
  • 14 hours of daylight per day in August in Indiana (Indianapolis)14
    14 hours of daylight per day
  • Moderate heat & humidity in August in Indiana (Indianapolis)M
    Moderate heat & humidity
  • 3.7 inches monthly rainfall in August in Indiana (Indianapolis)3.7
    3.7 inches of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Indiana (Indianapolis)8
    8 (Very High) UV index

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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.

Top Indiana destinations

Below are average maximum temperatures at popular countries, regions and places in Indiana in August. Select a holiday destination to see more weather parameters.

All Indiana destinations

Metric (°C)  |  Imperial (°F)

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How hot is it in Indiana in August?

Daytime temperatures usually reach 84°F in Indianapolis, Indiana in August with moderate heat and humidity, falling to 63°F at night.

How sunny is it in Indiana in August?

There are normally 9 hours of bright sunshine each day in Indianapolis, Indiana in August - that's 65% of daylight hours.

Does it rain in Indiana in August?

There are usually 9 days with some rain in Indianapolis, Indiana in August and the average monthly rainfall is 3.7 inches.

Indiana August sunrise & sunset times

Browse the sunrise and sunset times for Indiana in August 2025. Select a month to view Indiana sunrise and sunset times for the next 12 months. The Indiana sunrise and sunset times shown below are for Indianapolis.

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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