Hawaii Volcanoes National Park in September
Hawaii Volcanoes National Park · crowd + weather almanac
September crowd level
busy
about 109,000 visits in a
typical September
The 11th-busiest month of the year ·
median of 2016–2025 official NPS counts
September is the 11th-busiest month of the year at Hawaii Volcanoes National Park: about 109,000 recreation visits in a typical September (7% of the year's traffic, and 72% of what the peak month, January, sees). This is a busy month, though short of the summer-peak crush. Weather-wise, September days at the Hawaii Vol Np Hq 54, HI station typically top out around 73°F with nights near 55°F, and about 6.0 inches of precipitation falls over the month.
- Typical September: 109,123 recreation visits (median 2016–2025); the range across those years ran 25,270 (2020) to 141,377 (2017).
- Busier than 1 of the other 11 months.
- 1991–2020 September normals at Hawaii Vol Np Hq 54, HI: high 73°F, low 55°F, 5.98 in precipitation, 0.0 in snow.
September weather (1991–2020 normals)
| Typical daytime high | 73°F |
|---|---|
| Typical overnight low | 55°F |
| Precipitation (monthly normal) | 5.98 in |
| Snowfall (monthly normal) | 0.0 in |
| Measured at | Hawaii Vol Np Hq 54, HI (USC00511303), 2.2 mi from the park reference point, elev. 3,971 ft |
Every month at Hawaii Volcanoes
| Month | Typical visits | Crowds | High / Low | Precip |
|---|---|---|---|---|
| January | 152,217 | busiest stretch | 68°F / 49°F | 8.8 in |
| February | 135,439 | busiest stretch | 68°F / 49°F | 8.2 in |
| March | 122,200 | busy | 68°F / 51°F | 10.3 in |
| April | 112,226 | busy | 68°F / 52°F | 9.2 in |
| May | 106,047 | busy | 70°F / 53°F | 6.5 in |
| June | 132,224 | busiest stretch | 71°F / 54°F | 5.1 in |
| July | 138,000 | busiest stretch | 73°F / 56°F | 6.3 in |
| August | 133,067 | busiest stretch | 74°F / 56°F | 5.9 in |
| September | 109,123 | busy | 73°F / 55°F | 6.0 in |
| October | 117,599 | busy | 72°F / 55°F | 8.2 in |
| November | 124,781 | busy | 70°F / 54°F | 10.6 in |
| December | 139,552 | busiest stretch | 68°F / 52°F | 11.4 in |