How warm is it in Honolulu in July?

Daytime highs averaged 27.9 °C, night-time lows 24.9 °C. The highest value of the past 10 years was 29.4 °C (6 Jul 2019), the lowest 23.8 °C (14 Jul 2026).

How often does it rain in Honolulu in July?

On average there were 12.4 rain days (at least 1 mm) with 42.4 mm of precipitation in total.

How warm is the sea in Honolulu in July?

The sea temperature averaged 26.3 °C (open-sea point approx. 3 km from the town).

Holiday Weather Rewind

Destinations Method & data

Loading weather data…

We are fetching the daily values for every year. The first time, this takes a few seconds.

Honolulu weather in July: temperature & rain

Photo: Frank Schulenburg · CC BY-SA 4.0

🇺🇸 Weather in Honolulu in July

This is what the weather in Honolulu (Waikīkī, Oahu, Hawaii, USA) was like in July over the years 2017–2026.

Key facts at a glance

Prevailing weather: Partly cloudy

Avg. daytime high

27.9 °C

27.4 °C – 28.5 °C

Avg. night-time low

24.9 °C

24.4 °C – 25.7 °C

Avg. rain days in period

12.4

40 % of days · ≥ 1.0 mm

Avg. precipitation in period

42.4 mm

9.1 mm – 87.5 mm

Avg. cloud cover

52 %

This data source has no sunshine hours – average cloud cover is shown instead.

Avg. sea temperature

26.3 °C

Sea temperature available for 6 of 10 years.

Extremes: Highest temperature 29.4 °C (6 Jul 2019) · Lowest temperature 23.8 °C (14 Jul 2026) · Avg. daily peak wind 31 km/h

Weather mix of all days

28Sunny
130Partly cloudy
28Cloudy
107Light rain
17Rain

Summary

On average 27.9 °C during the day and 24.9 °C at night.
On average 12.4 rain days (Rain day = at least 1.0 mm of precipitation) with 42.4 mm of precipitation in total.
The sea averaged 26.3 °C.
Prevailing weather: Partly cloudy.
Warmest year: 2019 (avg. 28.5 °C), coolest: 2022 (avg. 27.4 °C).
Wettest year: 2020 (87.5 mm), driest: 2024 (9.1 mm).
Extremes: 29.4 °C on 6 Jul 2019 and 23.8 °C on 14 Jul 2026.

Overall values from all 10 years. How is this calculated?

Temperatures per year

Average over your travel period

Precipitation & rain days

Year by year

2026
Avg. max27.7°Avg. min24.9°
Rain days
15 Rain days
Precipitation
66.2 mm
Avg. cloud cover
–
Sea temperature
26.5 °C
Max 29.0 °C · Min 23.8 °C
2025
Avg. max28.3°Avg. min25.1°
Rain days
2 Rain days
Precipitation
13.6 mm
Avg. cloud cover
53 % cloudy
Sea temperature
26.3 °C
Max 29.3 °C · Min 24.4 °C
2024
Avg. max28.0°Avg. min24.8°
Rain days
1 Rain days
Precipitation
9.1 mm
Avg. cloud cover
53 % cloudy
Sea temperature
26.1 °C
Max 28.7 °C · Min 24.1 °C
2023
Avg. max28.1°Avg. min25.0°
Rain days
3 Rain days
Precipitation
14.1 mm
Avg. cloud cover
55 % cloudy
Sea temperature
26.5 °C
Max 28.8 °C · Min 23.9 °C
2022
Avg. max27.4°Avg. min24.4°
Rain days
20 Rain days
Precipitation
61.4 mm
Avg. cloud cover
55 % cloudy
Sea temperature
26.0 °C
Max 28.6 °C · Min 23.8 °C
2021
Avg. max27.4°Avg. min24.7°
Rain days
20 Rain days
Precipitation
64.1 mm
Avg. cloud cover
58 % cloudy
Sea temperature
26.3 °C
Max 28.1 °C · Min 24.1 °C
2020
Avg. max27.9°Avg. min25.0°
Rain days
22 Rain days
Precipitation
87.5 mm
Avg. cloud cover
56 % cloudy
Sea temperature
–
Max 28.9 °C · Min 24.2 °C
2019
Avg. max28.5°Avg. min25.7°
Rain days
12 Rain days
Precipitation
31.0 mm
Avg. cloud cover
34 % cloudy
Sea temperature
–
Max 29.4 °C · Min 25.0 °C
2018
Avg. max27.4°Avg. min24.7°
Rain days
19 Rain days
Precipitation
45.2 mm
Avg. cloud cover
67 % cloudy
Sea temperature
–
Max 28.6 °C · Min 24.0 °C
2017
Avg. max28.1°Avg. min25.2°
Rain days
10 Rain days
Precipitation
31.8 mm
Avg. cloud cover
40 % cloudy
Sea temperature
–
Max 29.0 °C · Min 24.5 °C

Frequently asked questions

How warm is it in Honolulu in July?: Daytime highs averaged 27.9 °C, night-time lows 24.9 °C. The highest value of the past 10 years was 29.4 °C (6 Jul 2019), the lowest 23.8 °C (14 Jul 2026).
How often does it rain in Honolulu in July?: On average there were 12.4 rain days (at least 1 mm) with 42.4 mm of precipitation in total.
How warm is the sea in Honolulu in July?: The sea temperature averaged 26.3 °C (open-sea point approx. 3 km from the town).

Check your exact travel dates

Choose your travel period – we show the weather for exactly those days.

Data sources

Weather data: Data obtained from the NASA Langley Research Center (LaRC) POWER Project funded through the NASA Earth Science/Applied Science Program
Reanalysis (weather model constrained by observations) on a coarse grid of about 50 km. Values represent a large area and can differ from local conditions, especially on islands, coasts and in mountains. Snow depth is the model value for the grid cell, not the depth on the slopes. No sunshine duration.
Reanalysis (weather model constrained by observations)
Reanalysis values represent a grid cell (approx. 25–50 km) and may differ from local measurements on coasts, islands and in mountains.
Sea temperature: MUR SST data were provided by JPL under support by NASA MEaSUREs program; accessed via NOAA CoastWatch ERDDAP
Daily multi-scale ultra-high resolution (≈ 1 km) analysis of satellite measurements (infrared, microwave) and in-situ data. Represents the foundation temperature below the daily warm surface layer. (Satellite and in-situ analysis); Sea measuring point approx. 3 km from the location (21.250, -157.840)
Place search: Natural Earth (public domain) · GeoNames (CC BY 4.0) / OpenStreetMap (ODbL)