Hilo, HI weather in April
Expect mild, often humid weather with rain on most days in Hilo in April, with highs near 79°F and lows near 66°F. Rain falls on about 25 days. Pack rain gear.
- Normal high
- 79°F
- Normal low
- 66°F
- Wet days
- 25
- 9.4 in total
- Muggy days
- 13
- dew point 65°F+
How April changes from start to finish
| April 1 | April 30 | |
|---|---|---|
| Normal high | 79°F | 80°F |
| Normal low | 66°F | 67°F |
| Chance of a wet day | 79% | 80% |
| Sunrise / sunset | 6:13 am / 6:34 pm | 5:52 am / 6:43 pm |
| Daylight | 12.3 h | 12.8 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Hawaii time (no daylight saving)).
A typical April day
- 6 am67°Fdew point 63°F
- 9 am74°Fdew point 65°F
- Noon78°Fdew point 66°F
- 3 pm78°Fdew point 66°F
- 6 pm74°Fdew point 65°F
- 9 pm71°Fdew point 66°F
NOAA hourly normals (local standard time) from Hilo Intl Airport (2 mi away); average wind 7 mph.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F1 of 30
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph7 of 30
- Hot dayshigh 90°F or more0 of 30
- Muggy daysdaily mean dew point 65°F or more13 of 30
- Wet daysat least 0.01 in of rain or melted snow25 of 30
- Notable rainat least 0.10 in17 of 30
- Freezing nightslow 32°F or below0 of 30
Average days per April, counted from daily records for each year 1991-2020.
Rain in April
Normal precipitation is 9.4 in; a dry April brings about 6.7 in and a wet one about 12.3 in (25th and 75th percentiles). About 6 days bring half an inch or more, and about 2 an inch or more.
How April varies from year to year
- Warmest April, 1991-20202020: average high 83°F
- Coolest April2009: average high 75°F
- Wettest April2004: 20.5 in
- Driest April2013: 3.0 in
- Highest reading89°F (April 29, 2017)
- Lowest reading58°F (April 2, 2013)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
April compared with March and May
| March | April | May | |
|---|---|---|---|
| Normal high | 79°F | 79°F | 81°F |
| Normal low | 65°F | 66°F | 67°F |
| Wet days | 22 | 25 | 23 |
| Comfortable days | 3 | 1 | 0 |
| Daylight | 12.0 h | 12.6 h | 13.1 h |
Highs change by 0°F from March and +2°F into May.
Nearby alternatives in April
- Warmer: Kihei, HI114 mi · high 85°F · 9 wet days
- Drier: Kailua-Kona, HI59 mi · high 83°F · 4 wet days
How Hilo ranks in April
- Normal high59th warmest of 378 cities; 7th of 7 in Hawaii
- Wet days378th driest of 378
- Comfortable days335th most of 340
What to pack for Hilo in April
- A rain jacket or umbrella – rain on about 25 days
Heating and cooling
April has 0 heating degree days and 227 cooling degree days (base 65°F), 7% of the year's total heating and cooling demand.
Questions
How hot is Hilo in April?
The normal high is 79°F and the normal low is 66°F. From 1991 to 2020 the hottest April reading was 89°F (April 29, 2017).
Does it rain a lot in Hilo in April?
About 25 days in April have at least 0.01 in of precipitation, and the normal total is 9.4 in. The wettest April in 1991-2020 was in 2004 (20.5 in); the driest was in 2013 (3.0 in).
Is April a good time to visit Hilo?
April ranks 6th of 12 months on our comfort score for Hilo (41 out of 100). It has about 1 comfortable day. The best months are January and February.
Where the numbers come from
- Temperature, rain, frost dates and humidity and wind by hour: Hilo Intl Airport (USW00021504), 2.2 mi E of the city center, 38 ft . NOAA normals and daily records, 1991-2020.
- Snowfall and snow depth: Kapoho Beach 93.11 (USC00513368), 23 mi SE of the city center, 20 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Hilo International Airport (912850-21504), 2.5 mi E of the city center, 29 ft . Hourly observations, 1991-2020.
- Not available for this location: cloud cover (no station close enough or similar enough in elevation).