Hilo Weather: May
 |
Average Day Temperature: | 77.2°F |
|
Average Night Temperature: | 71.3°F |
|
Sea Water Temperature: | 80.4°F |
|
Number of Sunny Days: | 12 days |
| Sunshine Hours: | 12.9 - 13.2 hours | |
|
Number of Rainy Days: | 4 days |
| Precipitation Totals: | 2.2 in | |
| detailed information | ||
Temperature
| Hilo |
Air Temperature in May, °F
The highest day temperature in May 2026 was 82°F. The lowest night temperature was 68°F. The average values for day and night temperatures during May were 76.9°F и 71.9°F respectivly.
Hilo Water Sea Temperature in May, °F
The average sea surface temperature in May 2026 for Hilo was 81.2°F. The maximum and minimum values were 80.4°F and 81.8°F respectively.
You can expect various weather conditions during May. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in May, in
Precipitation total in May for Hilo is 2.2 in. It makes may one of the least rainy months of the year.
The average wind speed in May is 7.9 mph. This value is relatively stable throughout the year.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Hilo in May is 7.5 hours.
Hilo on the Weather Map
| Boston |  |
+90 |
| Chicago | |
+76 |
| Hawaii |  |
+78 |
| Honolulu | |
+78 |
| Houston |  |
+86 |
| Las Vegas | |
+92 |
| Los Angeles |  |
+70 |
| Maui | |
+70 |
| Miami | |
+82 |
| Miami Beach | |
+84 |
| New York | |
+94 |
| San Diego | |
+64 |
| San Francisco | |
+60 |
| Sarasota | |
+94 |
| Tampa | |
+92 |
| 0900 |  |
76°F | W 6 mph |
| 1200 | |
78°F | W 8 mph |
| 1500 | |
78°F | SW 8 mph |
| 1800 | |
76°F | SW 7 mph |
| 2100 | |
74°F | SW 7 mph |
| 0000 | |
74°F | SW 6 mph |
| 0300 | |
74°F | SW 5 mph |
| 0600 | |
74°F | SW 5 mph |