If you plan to visit Hilo in May, the weather is typically alright, with an average high temperature of +27°C during the day and approximately 0 sunny days. Expect some rainy, though, as there are typically 29 rainy days in the month and around 258 mm of precipitation. The weather is changeable so you may have to pack for every eventuality. Search flightsin one click on Avionero.
Average weather
☀️
+27°C
Avg. max. temperature
+17°C
Min.
+34°C
Max.
258 mm
Total precipitation
78%
Avg. humidity
2 m/s
Avg. wind
0 ☀️
Sunny Days
2 ⛅️
Cloudy
29 🌦
Rainy
Our opinion: Hilo has OK weather in May.
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Average temperature in Hilo in May
Here are the expected maximum, average and minimum temperatures in Hilo for May based on the historical data.
Last Year
Historical Data
Going from a maximum of +28°C during the day to a minimum of +18°C during the night, the temperature in May averages around +26°C.
The average maximum temperature goes down 10% by the end of the month, compared with the beginning of the month, from +27°C to +26°C.
Is Hilo warm or cold in May?
Hilo is typically warm in May.
Maximum temperatures go up compared to the previous month from +26°C to +27°C. The minimum temperature also goes up from +20°C to +20°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
Take a look at how May is compared to other months in Hilo:
Climate in Hilo in May
Hilo weather looks like this, on average, in May and the surrounding months.
April
May
June
Avg. temperature
+26°C
+27°C
+28°C
Min. temperature
+16°C
+17°C
+17°C
Max. temperature
+31°C
+34°C
+32°C
Rainfall
349 mm
258 mm
228 mm
Wind
2 m/s
2 m/s
2 m/s
Humidity
79%
78%
78%
Air pressure
1017 HPa
1017 HPa
1017 HPa
Sunny days
0
0
0
Cloudy days
1
2
1
Rainy days
29
29
29
Snowy days
0
0
0
May weather is still as ok as in April.It’s getting warmer as May arrives. The average maximum temperature goes up from +26°C to +27°C during the day.As May arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 349 mm to 258 mm.It feels drier, as humidity decreases from 79% to 78%.The average wind speed doesn’t change much during May, staying around 2 m/s.The amount of sunny days stay about the same, averaging 0 sunny days during the month.
Wind speed in Hilo in May based on historical data.
Last Year
Historical Data
The average wind speed is 2 m/s getting up to 3 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Hilo is gradually increasing during May, going from 3 m/s to 3 m/s over the course of the month.
Rain
Amount of rainfall in mm during May in Hilo based on historical data.
Last Year
Historical Data
Typically, there is a 97% chance of rain on an average day in May, with total rainfall of approximately 474 mm. The maximum amount of rainfall per day is around 53 mm, which is considered heavy rain.May is a pretty wet month with over 30 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of galoshes.
Here’s how May is compared with other months in the amount of precipitation, total mm:
Hilo wettest month is March, where a typical day has a 90% chance of precipitation and 400 mm of rainfall per day. June, on the other hand, is the driest month with a mere 97% chance of precipitation and 228 mm of rainfall per day.
How was the weather last May in Hilo?
This is the weather in Hilo in May 2024:
1 May
🌧️
+27°C
2 May
☁️
+28°C
3 May
🌧️
+27°C
4 May
🌧️
+27°C
5 May
🌧️
+26°C
6 May
🌧️
+26°C
7 May
🌧️
+26°C
8 May
🌧️
+26°C
9 May
🌧️
+27°C
10 May
🌧️
+27°C
11 May
🌧️
+27°C
12 May
☀️
+27°C
13 May
☁️
+27°C
14 May
☁️
+26°C
15 May
🌧️
+24°C
16 May
🌧️
+26°C
17 May
🌧️
+24°C
18 May
☁️
+26°C
19 May
🌧️
+26°C
20 May
🌧️
+27°C
21 May
🌧️
+26°C
22 May
🌧️
+26°C
23 May
🌧️
+26°C
24 May
🌧️
+27°C
25 May
🌧️
+26°C
26 May
🌧️
+26°C
27 May
🌧️
+26°C
28 May
🌧️
+26°C
29 May
🌧️
+26°C
30 May
🌧️
+27°C
31 May
🌧️
+26°C
In May 2024 Hilo had 1 sunny days, 4 cloudy days, and 26 rainy days. The average maximum temperature was +26°C, with an absolute maximum of +28°C and a minimum of +24°C. The average humidity was 84%, with a maximum of 100% and a minimum of 57%. The average wind speed was 2 m/s, with a maximum of 8 m/s and a minimum of 0 m/s.
Are you planning a trip in May?
Climate Change over Years
This is how Hilo climate have been changing during last 43 years period.
The climate in Hilo in May has not changed much over the last 43 years.
The average temperature was the lowest in 1999 (+26°C) and the highest in 2015 (+28°C). The driest year was 1983 with only 1515 mm of rainfall, and the wettest year was 1990 with 6234 mm.
FAQ
Frequently asked questions about the weather in Hilo in May:
Is May a good time to visit Hilo?
It’s always a good time to visit Hilo, but the weather is changeable in May, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.
Can you sunbathe in Hilo in May?
May is warm in Hilo. You may enjoy some beach or pool time in the day, but pack something a tad warmer for the evening.
Is Hilo rainy in May?
Hilo is often rainy in May. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.
Is it sunny in Hilo in May?
Usually, it’s not very sunny in Hilo in May, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.
For this page, we’ve looked at the typical weather in Hilo, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
