Hottest (avg)
#8 / 12
Sits around the middle of the year.
April in context
How it compares to the rest of the year in Honolulu.
Wettest (avg)
#7 / 12
Typical rainfall for the year.
Daylight Hours
#5 / 12
Around the yearly average.
Windiest (avg)
#4 / 12
Close to the yearly wind average.
Highest UV
#3 / 12
UV runs high compared with most months.
Most Humid
#9 / 12
Humidity stays close to the yearly norm.
Monthly climate breakdown
A detailed look at the typical climate conditions for April.
Thermal profile
Temperature
Typical daytime high
- Nighttime low
-
- Feels like (avg)
-
Light window
Sunshine
12.7 h
Average daylight
- UV index (max)
- 9
- Typical sun hours
- 06:11 - 18:50
Wet-day pattern
Rain & Snow
Typical rainfall
- Rainy days
- 15 days
- Cloud cover (avg)
- 51%
Air feel
Humidity & Wind
73%
Average humidity
- Wind (avg)
-
- Wind (max gusts)
-
Historical daily baseline
Daily climate explorer
Pick a day to inspect the usual conditions through April in Honolulu. Based on a 30-year historical climate baseline, not a forecast.
Primary control
Select a day
Scroll to compare daily conditions. The summary updates with your selection.
Secondary context
Monthly trend
Median daytime highs across the month, with a softer low line.
Median temperatureMedian lowTypical range
Day 15 selected for April. Temperature 25.3°C.
Historical disruption baseline
Typical disruptions in April
Based on 30 years of historical data, these are the disruption patterns most likely to affect plans in April.
Wind High impact
Strong gusts Measures: Strong gust days (>=60 km/h). Observed about 18% of days (5.4 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
5.4 days / month
- Share of days
- ~18% of days
- Upper edge
- Up to ~74km/h (P95)
Why this matters
Strong gusts are possible on ~5 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Rain High impact
Rain disruption Measures: Likely rain disruption days. Observed about 3% of days (0.9 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.9 days / month
- Share of days
- ~3% of days
- Upper edge
- Up to ~31mm (P95)
Why this matters
Rain disruption risk appears on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Washout risk Measures: Washout day risk. Observed about 3% of days (0.9 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.9 days / month
- Share of days
- ~3% of days
- Upper edge
- Up to ~31mm (P95)
Why this matters
Washout conditions are possible on ~1 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Humidity Moderate
Muggy days Measures: Muggy days (dew point >=20C). Observed about 10% of days (3.0 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
3.0 days / month
- Share of days
- ~10% of days
- Upper edge
- Up to ~21°C (P95)
Why this matters
Muggy conditions are possible on ~3 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Show all disruptions (15 more)
Rain High impact
Heavy rain days Measures: Heavy rain days (>=10mm). Observed about 1% of days (0.3 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.3 days / month
- Share of days
- ~1% of days
- Upper edge
- Up to ~41mm (P95)
Why this matters
Heavy rain is possible on ~0 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Rain High impact
Washout run Measures: Multi-day washout runs. Observed about 0.1 days/month in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.1 days / month
- Share of days
- —
- Upper edge
- Up to ~43mm (P95)
Why this matters
Multi-day washout runs are possible on ~0 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Heat Moderate
Hot feels-like days Measures: Hot feels-like days (>=32C). Observed about 1% of days (0.4 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.4 days / month
- Share of days
- ~1% of days
- Upper edge
- Up to ~33°C (P95)
Why this matters
Feels-like heat >=32C is possible on ~0 days. Midday activity often needs adjustment around shade, hydration, and indoor fallback options.
Wind Minor
Gusty days Measures: Gusty days (>=40 km/h). Observed about 75% of days (22.5 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
22.5 days / month
- Share of days
- ~75% of days
- Upper edge
- Up to ~68km/h (P95)
Why this matters
Gusty conditions are possible on ~23 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Rain Minor
Wet days Measures: Wet days (>=0.1mm). Observed about 66% of days (19.7 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
19.7 days / month
- Share of days
- ~66% of days
- Upper edge
- Up to ~4.7mm (P95)
Why this matters
Measurable rain is possible on ~20 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Humidity Minor
Humid days Measures: Humid days (dew point >=18C). Observed about 56% of days (16.7 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
16.7 days / month
- Share of days
- ~56% of days
- Upper edge
- Up to ~20°C (P95)
Why this matters
Humid conditions are possible on ~17 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Rain Minor
Rainy hours Measures: Rain-hours signal (>=3h rain). Observed about 51% of days (15.2 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
15.2 days / month
- Share of days
- ~51% of days
- Upper edge
- Up to ~14h (P95)
Why this matters
Several rainy hours are possible on ~15 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Heat Minor
Warm nights Measures: Warm nights (min >=22C). Observed about 44% of days (13.3 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
13.3 days / month
- Share of days
- ~44% of days
- Upper edge
- Up to ~23°C (P95)
Why this matters
Warm nights are possible on ~13 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Cloud Minor
Cloudy days Measures: Cloudy days (cloud cover >=60%). Observed about 32% of days (9.5 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
9.5 days / month
- Share of days
- ~32% of days
- Upper edge
- Up to ~99% (P95)
Why this matters
Cloudy skies are possible on ~10 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Rain Minor
Wet most of day Measures: Wet-most-of-day signal (>=6h rain). Observed about 30% of days (8.9 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
8.9 days / month
- Share of days
- ~30% of days
- Upper edge
- Up to ~16h (P95)
Why this matters
Wet-most-of-day conditions are possible on ~9 days. Outdoor plans can become unreliable, so keep an indoor backup and flexibility around start times.
Wind Minor
Breezy days Measures: Breezy days (mean wind >=25 km/h). Observed about 16% of days (4.8 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
4.8 days / month
- Share of days
- ~16% of days
- Upper edge
- Up to ~34km/h (P95)
Why this matters
Breezy conditions are possible on ~5 days. Exposed activities and transport links are more likely to be disrupted, so keep sheltered alternatives ready.
Cloud Minor
Mostly cloudy days Measures: Mostly cloudy days (cloud cover >=80%). Observed about 14% of days (4.2 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
4.2 days / month
- Share of days
- ~14% of days
- Upper edge
- Up to ~100% (P95)
Why this matters
Mostly cloudy skies are possible on ~4 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Humidity Minor
High humidity Measures: High humidity days (RH >=80%). Observed about 11% of days (3.4 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
3.4 days / month
- Share of days
- ~11% of days
- Upper edge
- Up to ~86% (P95)
Why this matters
High humidity is possible on ~3 days. Comfort and pace can drop quickly, so plan shorter outdoor blocks with air-conditioned backup stops.
Cloud Minor
Overcast days Measures: Overcast days (cloud cover >=95%). Observed about 5% of days (1.6 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
1.6 days / month
- Share of days
- ~5% of days
- Upper edge
- Up to ~100% (P95)
Why this matters
Overcast skies are possible on ~2 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Humidity Minor
Convective risk Measures: Convective storm risk proxy. Observed about 2% of days (0.7 days/month) in April. Historical risk signal only, not a day-by-day forecast.
Likely frequency
0.7 days / month
- Share of days
- ~2% of days
- Upper edge
- Up to ~22°C (P95)
Why this matters
Convective risk signal appears on ~1 days. Fixed-time outdoor plans are safer with a backup option and flexible timing.
Travel planning FAQ
Frequently asked questions
Quick answers to the weather questions you ask the most.
Is April a good time to visit Honolulu?
Typical April days in Honolulu reach highs of 25°C (77°F) with nights around 22°C (72°F). It usually feels warm by day and mild after dark. Overall, April sits in the middle of the Honolulu climate range.
What are temperatures like in April?
In April, you can usually expect highs of 25°C (77°F) and lows near 22°C (72°F). That means warm days and mild nights, so pack layers you can add or remove.
How much does it rain in April?
Rainfall in April averages 31 mm (1.2 in) across roughly 15 days. Overall it is a very wet time of year, so a light rain jacket and waterproof shoes are very handy.
How many hours of daylight are there in April?
You can expect about 13 hours of daylight in April. Sunrise is typically around 06:11 and sunset near 18:50. Daylight is fairly typical, with enough time for sightseeing.
How strong is the sun in April?
UV levels frequently reach very high levels (around 9), so strong sun protection is essential, especially around midday.
Is it windy in April?
In April, average wind speeds are around 18 km/h (11 mph), with gusts on the windiest days reaching about 63 km/h (39 mph). On the ground, it is it is a notably windy place, and strong gusts are fairly common.