United States · 21.31°N 157.86°W · monthly climate normals, judged against the Tropical preset (mean 24–33 °C75–91 °F, anything but the monsoon)
The best time to visit Honolulu is June to October, when mean temperatures run from 25 °C77 °F to 26 °C79 °F and rainfall runs 72–152 mm2.8–6.0 in a month.
The rainy season runs October to May and August, and November to January is a true monsoon — 200–224 mm7.9–8.8 in a month, peaking in January at 224 mm8.8 in. August is the hottest month at 26 °C79 °F and January the coldest at 22 °C72 °F.
Figures are 30-year monthly averages (WorldClim 2.1 monthly normals 1970–2000) for the 0.25° grid cell at 21.31, -157.86 — a climate guide, not a forecast.
Pick the weather you like and every month is judged against it — temperature above the month names, rain below.
Good time to go for a Tropical holiday: June to October.
Open Honolulu on the interactive map ↗ the same verdict for every place on Earth, any month
Reading the chart. Gold is good: the month fits what you picked. Any other colour names the reason it doesn't — the temperature bar can be too cold or too hot, the rain bar too dry, too rainy or monsoon. A faded gold bar is a half that fits while the other half fails; a gold month name means both fit.
What the verdicts mean. Temperature is the monthly mean, judged against the preset's band (mean 24–33 °C75–91 °F for Tropical). Rain is judged by each month's class within Honolulu's own year rather than raw millimetres: dry under 60 mm2.4 in, showers 60–100 mm2.4–3.9 in, rainy from 100 mm3.9 in and 35 % of the wettest month. Too rainy is a rainy-season month the preset doesn't allow. Monsoon is the heaviest kind of rainy season — 180 mm7.1 in or more (120 mm4.7 in near the yearly peak) in a climate whose wettest month is at least three times its driest — so every monsoon month is rainy season too; the label says which kind. Full rules on the method page.
| Month | Rain | Mean | Season | Tropical verdict |
|---|---|---|---|---|
| January | 2248.8 | 2271 | monsoon | too cold |
| February | 1526.0 | 2271 | rainy | too cold |
| March | 1766.9 | 2272 | rainy | too cold |
| April | 1606.3 | 2373 | rainy | too cold |
| May | 1204.7 | 2474 | rainy | too cold |
| June | 722.8 | 2576 | showers | good |
| July | 963.8 | 2577 | showers | good |
| August | 1204.7 | 2678 | rainy | good |
| September | 883.5 | 2678 | showers | good |
| October | 1526.0 | 2576 | rainy | good |
| November | 2248.8 | 2474 | monsoon | too cold |
| December | 2007.9 | 2373 | monsoon | too cold |
| Looking for | Rule | Months that fit |
|---|---|---|
| Warm | mean 14–24 °C57–75 °F, dry or showers | |
| Tropical | mean 24–33 °C75–91 °F, anything but the monsoon | June to October |
| Beach | mean 24–33 °C75–91 °F, dry or showers | June to July and September |
| Cool | mean 0–14 °C32–57 °F, anything but the monsoon | |
| Snow | mean below 0 °C32 °F, any rain |
Yes. The rainy season runs October to May and August, and November to January is a true monsoon — 200–224 mm7.9–8.8 in a month, peaking in January at 224 mm8.8 in. Outside it, rain eases but never stops.
August is the hottest month at 26 °C79 °F and January the coldest at 22 °C72 °F. Annual rainfall totals about 1,784 mm70 in.
The interactive map colours the whole world by how it fits your picks in any month, and shows this chart for any place you tap.