Indianapolis weather by month & the best time to visit
🇺🇸 United States · city break · humid subtropical climate
The best time to visit Indianapolis is September — its sunniest month (Sunshine Score 76/100), with August and July close behind. Indianapolis averages about 2,168 hours of sunshine a year. Daytime highs around 26°C / 79°F and roughly 83 mm of rain in September.
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- Sun hours / year
- 2,168
- Sunniest month
- September
- Peak score
- 76/100
- Rain / year
- 1,194 mm
- Snow / year
- ≈1 m
- Midday UV at peak
- 8 (very high)
- Population
- 1.4M
- Elevation
- 236 m
When is the best time to visit Indianapolis?
For sunshine, the best time to visit Indianapolis is September, then August and July. The dullest month is January (0/100, 81 mm of rain). The full month-by-month picture is in the table below.
How sunny is Indianapolis?
Indianapolis gets a moderate 2,168 hours of sunshine a year. 76 Sunshine Score points separate September (76) from January (0), so the month you pick matters. It ranks #333 of 580 destinations in United States for annual sunshine, below the national median of 2,279 hours. The year's 1,194 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 2° / 36°F | -7° / 19°F | 81 mm | 1 |
| February | 0 | 4° / 39°F | -6° / 21°F | 73 mm | 2 |
| March | 12 | 10° / 50°F | 0° / 32°F | 98 mm | 4 |
| April | 58 | 18° / 64°F | 6° / 43°F | 119 mm | 5 |
| May | 69 | 23° / 73°F | 12° / 54°F | 125 mm | 6 |
| June | 67 | 27° / 81°F | 17° / 63°F | 135 mm | 7 |
| July | 71 | 29° / 84°F | 19° / 66°F | 114 mm | 8 |
| August | 75 | 29° / 84°F | 18° / 64°F | 88 mm | 7 |
| September | 76 | 26° / 79°F | 14° / 57°F | 83 mm | 6 |
| October | 67 | 19° / 66°F | 7° / 45°F | 99 mm | 4 |
| November | 19 | 11° / 52°F | 0° / 32°F | 88 mm | 2 |
| December | 0 | 4° / 39°F | -4° / 25°F | 91 mm | 1 |
See Indianapolis on the interactive sunshine globe →
Nearby places for sunshine
- Cincinnati / Covington United States · 158 km · best in Aug · 2,148 h sun/yr
- Fort Wayne United States · 168 km · best in Sep · 2,140 h sun/yr
- Dayton United States · 178 km · best in Sep · 2,149 h sun/yr
- Louisville United States · 179 km · best in Aug · 2,171 h sun/yr
- Evansville United States · 215 km · best in Aug · 2,259 h sun/yr
- South Bend United States · 221 km · best in Sep · 2,045 h sun/yr
Nearest destinations
- West Lafayette United States · 95 km · 2,188 h sun/yr · best in Sep
- Savoy United States · 173 km · 2,242 h sun/yr · best in Sep
Head-to-head
How Indianapolis compares month by month: Indianapolis vs Cincinnati / Covington · Indianapolis vs Dayton · Indianapolis vs Fort Wayne · Indianapolis vs Evansville · all comparisons
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