Port St. Lucie, FL weather in May
May in Port St. Lucie: warm and oppressively humid, with some rain. Highs 84°F, lows 69°F, rain on about 9 days.
- Normal high
- 84°F
- Normal low
- 69°F
- Wet days
- 9
- 4.2 in total
- Muggy days
- 24
- dew point 65°F+
How May changes from start to finish
| May 1 | May 31 | |
|---|---|---|
| Normal high | 83°F | 86°F |
| Normal low | 67°F | 71°F |
| Chance of a wet day | 25% | 36% |
| Sunrise / sunset | 6:42 am / 7:54 pm | 6:26 am / 8:11 pm |
| Daylight | 13.2 h | 13.7 h |
Chance of a wet day: average for the first and last 7 days of the month. Times are local clock time (Eastern Time).
A typical May day
- 6 am73°Fdew point 68°F
- 9 am81°Fdew point 68°F
- Noon84°Fdew point 67°F
- 3 pm83°Fdew point 68°F
- 6 pm80°Fdew point 68°F
- 9 pm77°Fdew point 68°F
NOAA hourly normals (local standard time) from West Palm Beach Intl Airport (45 mi away); average wind 10 mph; clear or few clouds in 51% of daytime hours, mostly cloudy or overcast in 24%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F1 of 31
- Beach dayshigh 80-95°F, under 0.05 in of rain, afternoon wind under 15 mph16 of 31
- Hot dayshigh 90°F or more5 of 31
- Muggy daysdaily mean dew point 65°F or more24 of 31
- Wet daysat least 0.01 in of rain or melted snow9 of 31
- Notable rainat least 0.10 in6 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per May, counted from daily records for each year 1991-2020.
Rain in May
Normal precipitation is 4.2 in; a dry May brings about 1.6 in and a wet one about 6.2 in (25th and 75th percentiles). About 3 days bring half an inch or more, and about 1 an inch or more.
How May varies from year to year
- Warmest May, 1991-20201995: average high 90°F
- Coolest May2018: average high 83°F
- Wettest May2016: 13.1 in
- Driest May2000: 0.4 in
- Highest reading98°F (May 18, 1995)
- Lowest reading45°F (May 8, 1992)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
May compared with April and June
| April | May | June | |
|---|---|---|---|
| Normal high | 81°F | 84°F | 88°F |
| Normal low | 64°F | 69°F | 73°F |
| Wet days | 7 | 9 | 14 |
| Comfortable days | 6 | 1 | 0 |
| Daylight | 12.8 h | 13.5 h | 13.8 h |
Highs change by +3°F from April and +4°F into June.
Nearby alternatives in May
- Warmer: Lakeland, FL111 mi · high 91°F · 8 wet days
How Port St. Lucie ranks in May
- Normal high74th warmest of 378 cities; 21st of 23 in Florida
- Wet days158th driest of 378
- Comfortable days318th most of 339
What to pack for Port St. Lucie in May
- A rain jacket or umbrella – rain on about 9 days
- A swimsuit – about 16 beach days
Heating and cooling
May has 0 heating degree days and 363 cooling degree days (base 65°F), 9% of the year's total heating and cooling demand.
Questions
How hot is Port St. Lucie in May?
The normal high is 84°F and the normal low is 69°F. From 1991 to 2020 the hottest May reading was 98°F (May 18, 1995).
Does it rain a lot in Port St. Lucie in May?
About 9 days in May have at least 0.01 in of precipitation, and the normal total is 4.2 in. The wettest May in 1991-2020 was in 2016 (13.1 in); the driest was in 2000 (0.4 in).
Is May a good time to visit Port St. Lucie?
May ranks 7th of 12 months on our comfort score for Port St. Lucie (50 out of 100). It has about 1 comfortable day and about 5 days at 90°F or hotter. The best months are January, February and March.
Where the numbers come from
- Temperature, rain, snowfall and snow depth: Ft Pierce (USC00083207), 10 mi N of the city center, 25 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Stuart (USC00088620), 9.9 mi SE of the city center, 13 ft . NOAA normals and daily records, 1991-2020.
- Humidity and wind by hour: West Palm Beach Intl Airport (USW00012844), 45 mi SSE of the city center, 19 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Melbourne Intl Airport (USW00012838), 58 mi NNW of the city center, 22 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Palm Beach International Airport (722030-12844), 45 mi SSE of the city center, 11 ft . Hourly observations, 1991-2020.