Soil Temperature in Hawaii
The current average 2-inch soil temperature across Hawaii is 67°F, based on 6 USDA and NOAA monitoring stations. Readings range from 52°F to 76°F. Last updated May 18, 2026.
Current Planting Conditions
Warm-season grasses are actively growing across Hawaii with soil averaging 67°F at 2 inches. Bermuda, zoysia, and St. Augustine can be seeded or sodded now. Cool-season overseeding is closing for the season.
Monitoring Stations in Hawaii (6)
| Station | 2" Temp | Last Reading |
|---|---|---|
| Kainaliu (Hawaii) | 76°F | 2026-05-18 |
| Kukuihaele (Hawaii) | 74°F | 2026-05-18 |
| Waimea Plain (Hawaii) | 67°F | 2026-05-18 |
| Silver Sword (Hawaii) | 52°F | 2026-05-18 |
| Mana House (Hawaii) | 64°F | 2026-05-18 |
| Puuwai Ranch (Hawaii) | 67°F | 2026-05-18 |
Cities in Hawaii (8)
Soil Temperature FAQ for Hawaii
What is the current soil temperature in Hawaii?
The current average 2-inch soil temperature across Hawaii is 67°F, based on 6 USDA and NOAA monitoring stations. Readings range from 52°F to 76°F depending on location and elevation.
When should I apply pre-emergent in Hawaii?
Apply pre-emergent herbicide when soil at 2 inches reaches 55°F for several consecutive days. Timing varies across Hawaii, so check your city's page for station-specific readings and the pre-emergent timing recommendation.
When can I plant grass seed in Hawaii?
Cool-season grasses (fescue, bluegrass) can be seeded when soil holds between 50 and 65°F. Warm-season grasses (bermuda, zoysia) need soil above 65°F. Timing varies by location, so check your city's planting window for the dates specific to your area.