Hawaii weather in September: Statewide normals and every place, NOAA 1991-2020
In September, Hawaii's statewide normal high is 77°F and normal low 61°F; normal highs run from 75°F in Kula to 90°F in Kahului (NOAA 1991-2020 normals).
- Statewide normal high
- 77°FSeptember, 1991-2020
- Statewide normal low
- 61°FSeptember, 1991-2020
- Statewide normal precipitation
- 4.41 inSeptember
- Warmest place
- 90°Fnormal high, Kahului
- Coolest place
- 75°Fnormal high, Kula
Where is Hawaii warmest and wettest in September?
Kahului has the warmest September afternoons (90°F) and Kula the coolest (75°F). Hilo gets the most precipitation (8.70 in) and Kahului the least (0.45 in).
Statewide, September averaged 68.5°F in 2021, 69.4°F in 2022, 69.6°F in 2023, 69.4°F in 2024, 69.4°F in 2025, against a 1991-2020 normal of 69.0°F.
| Place | High | Low | Precip. | Snow |
|---|---|---|---|---|
| Honolulu | 88°F | 75°F | 0.88 | – |
| Hilo | 83°F | 70°F | 8.70 | – |
| Kaneohe | 84°F | 76°F | 1.50 | 0.0 |
| Kahului | 90°F | 71°F | 0.45 | – |
| Kailua | 87°F | 75°F | 0.54 | – |
| Wahiawa | 83°F | 67°F | 4.61 | 0.0 |
| Ewa Beach | 87°F | 70°F | 0.76 | 0.0 |
| Makaha | 85°F | 70°F | 0.92 | 0.0 |
| Lihue | 85°F | 75°F | 2.18 | 0.0 |
| Kula | 75°F | 59°F | 1.36 | 0.0 |
| Waimanalo | 85°F | 74°F | 2.62 | 0.0 |
| Kilauea | 84°F | 71°F | 4.02 | 0.0 |
| Waimea | 87°F | 69°F | – | – |
| Princeville | 85°F | 70°F | 5.54 | 0.0 |
| Hana | 83°F | 70°F | 6.12 | – |
| Paauilo | 83°F | 65°F | 4.51 | 0.0 |
| Kapalua | 87°F | 72°F | 1.22 | 0.0 |
| Makena | 87°F | 69°F | 1.11 | 0.0 |
| Barking Sands | 87°F | 72°F | 0.78 | 0.0 |
| Ewa Kalaeloa Airport | 89°F | 72°F | 0.67 | – |
| Glenwood #2 55.4 | 78°F | 61°F | 16.08 | 0.0 |
| Haleakala Ranger Station 338 | 65°F | 48°F | 2.53 | 0.0 |
| Hawaii Vol National Park Headquarters 54 | 73°F | 55°F | 5.98 | 0.0 |
| Kahoolawe 499.6 | 78°F | 69°F | 0.89 | 0.0 |
| Kanalohuluhulu 1075 | 72°F | 56°F | 2.21 | 0.0 |
| Kapaka Farm 904.1 | 85°F | 75°F | 3.78 | 0.0 |
| Ke-Ahole Point 68.13 | 86°F | 73°F | – | – |
| Kihalani 132.5 | 81°F | 67°F | 7.25 | 0.0 |
| Kii-Kahuku 911 | 83°F | 74°F | 2.25 | 0.0 |
| Kula Hospital 267 | 75°F | 58°F | 2.73 | 0.0 |
| Lanai Airport 656 | 83°F | 67°F | 0.93 | 0.0 |
| Mahaulepu 941.1 | 89°F | 73°F | – | – |
| Makaweli 965 | 87°F | 72°F | 1.16 | 0.0 |
| Manoa Lyon Arbo 785.2 | 81°F | 70°F | 12.19 | 0.0 |
| Mauna Loa (5 mi NNE) | 57°F | 41°F | 0.67 | – |
| Molokai Airport | 87°F | 73°F | 0.99 | 0.0 |
| Ohe'o 258.6 | 83°F | 72°F | 6.78 | 0.0 |
| Opihihale #2 24.1 | 77°F | 63°F | 4.72 | 0.0 |
| Poamoho Experiment Farm 855.2 | 85°F | 70°F | 1.31 | – |
| Puu Manawahua 725.6 | 83°F | 65°F | – | – |
| Puu-O-Hoku Ranch 542.1 | 84°F | 71°F | – | – |
| Puukohola Heiau 98.1 | 88°F | 75°F | 0.64 | 0.0 |
| Puukolii 457.1 | 85°F | 70°F | 1.18 | 0.0 |
| Sea Mountain 12.15 | 84°F | 70°F | 2.77 | 0.0 |
| South Kona 2 2.32 | 79°F | 60°F | 2.20 | 0.0 |
| Waihee 837.5 | 84°F | 71°F | 6.42 | 0.0 |
| Waikiki 717.2 | 88°F | 74°F | 1.02 | 0.0 |
| Waimea Valley 892.2 | 86°F | 70°F | 3.32 | 0.0 |
Source: NOAA NCEI nClimDiv statewide normals; NOAA NCEI 1991-2020 monthly normals for each station.