Wailuku in Spring
In spring (March, April and May), Wailuku sees average daytime highs around 79°F and overnight lows near 70°F, with 3.1 in of rain over about 14 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs climb from about 77°F in early March to 82°F by late May. The sky is clear or mostly clear about 40% of the time across spring, and the air most often feels humid.
Spring is Wailuku's 2nd-best season to visit on our travel score. Wailuku has little temperature swing across the year, so its calendar seasons blur — the season framing matters less here than for a place with four distinct seasons. For the whole year in context, see Wailuku's year-round climate.
- Avg daytime high
- 79°F
- 3rd-warmest season
- Avg overnight low
- 70°F
- Rainfall
- 3.1 in
- 14 wet days
- Avg wind
- 10 mph
- Travel score
- 7.6
- 2nd-best season
- Months
- Mar · Apr · May
Temperature in Wailuku in Spring
Over the season highs climb from about 77°F in early March to 82°F by late May.
A typical spring day in Wailuku reaches about 79°F and drops to 70°F overnight. The warmest of the three months is May, the coolest March.
Wailuku weather by month
How the three spring months (March, April and May) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 77° / 69° | 1.4 | 5.6 | 10.9 | 7.9 |
| Feb | 77° / 68° | 1.2 | 5.2 | 11.3 | 7.8 |
| Mar | 77° / 69° | 1.8 | 6.7 | 11.9 | 7.5 |
| Apr | 79° / 70° | 0.8 | 3.9 | 12.5 | 7.6 |
| May | 81° / 72° | 0.5 | 3.3 | 13 | 7.7 |
| Jun | 82° / 73° | 0.2 | 1.9 | 13.2 | 7.6 |
| Jul | 83° / 74° | 0.4 | 2.7 | 13.1 | 7.0 |
| Aug | 84° / 75° | 0.5 | 2.7 | 12.7 | 6.8 |
| Sep | 84° / 75° | 0.4 | 2.2 | 12.1 | 6.8 |
| Oct | 83° / 74° | 0.7 | 3.2 | 11.5 | 7.0 |
| Nov | 80° / 72° | 1.0 | 5 | 11 | 7.4 |
| Dec | 78° / 70° | 1.6 | 5.2 | 10.8 | 7.7 |
Cloud cover in Spring
The sky is clear or mostly clear about 40% of the time across spring.
Chance of precipitation in Spring
Wailuku gets around 3.1 in of rain over 14 wet days across spring. The line is the day-by-day chance of measurable precipitation.
Humidity in Spring
Most of spring feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Spring
Winds average 10 mph across spring.
Sunrise & sunset in Spring
Daylight runs from about 11 h 36 min in early March to 13 h 12 min by late May. The lit band spans sunrise to sunset each day.
Solar energy in Spring
Average shortwave solar energy reaching the ground each day across spring, about 6.3 kWh/m².
Hazard calendar for Wailuku
In spring, Wailuku overlaps its pacific hurricane season. The full year is below, with each hazard's peak months called out.
Wailuku sits in the eastern Pacific hurricane zone; the season peaks August–September.
Is spring a good time to visit Wailuku?
Our two travel scores rate spring for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
spring is one of the better times to visit Wailuku for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Wailuku in Spring
From spring's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In spring, Wailuku sees daytime highs around 79°F and nights near 70°F. Pack light clothes and sun protection. About 14 days see rain.
Sea temperature near Wailuku in Spring
The nearest coast averages about 76°F across spring — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea offshore is warmest in September at about 80°F and coldest in February near 75°F.
The water stays above 68°F all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°F) | 76 | 75 | 75 | 76 | 77 | 78 | 79 | 80 | 80 | 80 | 79 | 77 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm | Warm |
| Sea temperature (°F) | Comfort | |
|---|---|---|
| Jan | 76 | Warm |
| Feb | 75 | Warm |
| Mar | 75 | Warm |
| Apr | 76 | Warm |
| May | 77 | Warm |
| Jun | 78 | Warm |
| Jul | 79 | Warm |
| Aug | 80 | Warm |
| Sep | 80 | Warm |
| Oct | 80 | Warm |
| Nov | 79 | Warm |
| Dec | 77 | Warm |
UV index in Wailuku in Spring
Clear-sky midday UV across spring averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Wailuku peaks around July 22 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 7 | 9 | 11 | 13 | 10 | 11 | 12 | 12 | 12 | 10 | 7 | 6 |
| Level | High | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 7 | High |
| Feb | 9 | Very high |
| Mar | 11 | Extreme |
| Apr | 13 | Extreme |
| May | 10 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Where is Wailuku?
Wailuku sits at 20.9°N, 156.5°W, 249 ft above sea level, in United States. The nearest listed city is Kahului, 1.9 mi away.
Topography around Wailuku
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Wailuku.
Within 2 miles, the terrain around Wailuku has large variations in elevation — a maximum elevation change of 2,749 ft around an average of 522 ft above sea level; within 10 miles, very significant variations in elevation — a maximum elevation change of 5,751 ft; within 50 miles, extreme variations in elevation — a maximum elevation change of 9,977 ft.
The land around Wailuku is covered by trees (45%), artificial surfaces (30%) and grassland (20%) within 2 miles, grassland (38%), water (34%) and trees (21%) within 10 miles, and water (82%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Wailuku (20.8913°, -156.506°, elevation 249 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.