Climate of Honolulu, United States

Am

Köppen-Geiger climate classification: Am — Tropical, monsoon.

Honolulu has a mean annual temperature of 23.3 °C and receives 1086 mm of precipitation per year (1991–2020 climate normals). The warmest month is August with a mean temperature of 25.1 °C, while February is the coldest month at 21.4 °C. Most precipitation falls in March (132 mm); the driest month is June (50 mm).

Climate Diagram

Climate diagram for Honolulu: monthly mean temperature (red line, left axis, °C) and monthly precipitation (blue bars, right axis, mm), 1991–2020 0 0 10 20 20 40 30 60 40 80 50 100 60 120 70 140 °C mm J F M A M J J A S O N D

Walter–Lieth diagram: blue bars show monthly precipitation (right axis, mm), the red line shows monthly mean temperature (left axis, °C). Scale: 1 °C ≡ 2 mm.

Climate Table

MonthMean temperature (°C)Precipitation (mm)
January21.6109.9
February21.495.6
March21.6131.5
April22.486.2
May23.270.4
June24.150.1
July24.761.5
August25.178.7
September25.163.4
October24.691.5
November23.5124.0
December22.4122.8
Year23.31085.6

Live Forecast

Looking for the current weather instead of climate averages? Open the live forecast diagrams in WZ Diagrams — 15 weather models, ensemble spread, radar and more.

Data Source

Climate normals and Köppen-Geiger classification: Beck et al. (2023), Scientific Data 10, 724, CC BY 4.0. Period 1991–2020. Classification resolution ≈ 1 km; monthly climate data resolution ≈ 11 km (0.1°, Corrected January 2026 release (version 2)), sampled at the grid cell containing the city coordinates (21.31°, -157.86°). Climate normals describe the long-term average, not current weather.