Boca Raton, FL weather in August
Expect hot, oppressively humid weather with rain on most days in Boca Raton in August, with highs near 91°F and lows near 76°F. Rain falls on about 18 days. It is one of the warmest months in Boca Raton. Plan outdoor time for mornings and evenings.
- Normal high
- 91°F
- Normal low
- 76°F
- Wet days
- 18
- 8.7 in total
- Muggy days
- 31
- dew point 65°F+
How August changes from start to finish
| August 1 | August 31 | |
|---|---|---|
| Normal high | 91°F | 90°F |
| Normal low | 76°F | 76°F |
| Chance of a wet day | 54% | 58% |
| Sunrise / sunset | 6:45 am / 8:07 pm | 6:59 am / 7:41 pm |
| Daylight | 13.4 h | 12.7 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 August day
- 6 am78°Fdew point 74°F
- 9 am85°Fdew point 75°F
- Noon88°Fdew point 74°F
- 3 pm87°Fdew point 74°F
- 6 pm84°Fdew point 74°F
- 9 pm81°Fdew point 74°F
NOAA hourly normals (local standard time) from West Palm Beach Intl Airport (23 mi away); average wind 8 mph; clear or few clouds in 40% of daytime hours, mostly cloudy or overcast in 35%.
What kind of days to expect
- Comfortable dayshigh 65-80°F and dew point under 60°F0 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 more21 of 31
- Muggy daysdaily mean dew point 65°F or more31 of 31
- Wet daysat least 0.01 in of rain or melted snow18 of 31
- Notable rainat least 0.10 in12 of 31
- Freezing nightslow 32°F or below0 of 31
Average days per August, counted from daily records for each year 1991-2020.
Rain in August
Normal precipitation is 8.7 in; a dry August brings about 5.7 in and a wet one about 10.6 in (25th and 75th percentiles). About 5 days bring half an inch or more, and about 3 an inch or more.
How August varies from year to year
- Warmest August, 1991-20202015: average high 92°F
- Coolest August1994: average high 88°F
- Wettest August2012: 22.7 in
- Driest August2000: 3.0 in
- Highest reading99°F (August 25, 2003)
- Lowest reading66°F (August 6, 2005)
From the station's daily records with NOAA quality flags removed; most recent date shown when a reading repeats.
August compared with July and September
| July | August | September | |
|---|---|---|---|
| Normal high | 90°F | 91°F | 89°F |
| Normal low | 76°F | 76°F | 75°F |
| Wet days | 15 | 18 | 17 |
| Comfortable days | 0 | 0 | 0 |
| Daylight | 13.6 h | 13.0 h | 12.3 h |
Highs change by +1°F from July and -2°F into September.
Nearby alternatives in August
- Drier: Key West, FL164 mi · high 91°F · 15 wet days
How Boca Raton ranks in August
- Normal high123rd warmest of 378 cities; 16th of 23 in Florida
- Wet days365th driest of 378
- Comfortable days270th most of 341
What to pack for Boca Raton in August
- Light, breathable clothing – highs near 91°F and about 31 muggy days
- A rain jacket or umbrella – rain on about 18 days
- A swimsuit – about 16 beach days
Heating and cooling
August has 0 heating degree days and 567 cooling degree days (base 65°F), 13% of the year's total heating and cooling demand.
Questions
How hot is Boca Raton in August?
The normal high is 91°F and the normal low is 76°F. From 1991 to 2020 the hottest August reading was 99°F (August 25, 2003).
Does it rain a lot in Boca Raton in August?
About 18 days in August have at least 0.01 in of precipitation, and the normal total is 8.7 in. The wettest August in 1991-2020 was in 2012 (22.7 in); the driest was in 2000 (3.0 in).
Is August a good time to visit Boca Raton?
August ranks 12th of 12 months on our comfort score for Boca Raton (32 out of 100). It has almost no comfortable days and about 21 days at 90°F or hotter. The best months are January, February and March.
Where the numbers come from
- Temperature, snowfall and snow depth: Ft Lauderdale (USC00083163), 19 mi SSW of the city center, 16 ft . NOAA normals and daily records, 1991-2020.
- Rain and humidity and wind by hour: West Palm Beach Intl Airport (USW00012844), 23 mi N of the city center, 19 ft . NOAA normals and daily records, 1991-2020.
- Frost dates: Ft Lauderdale Beach (USC00083168), 15 mi S of the city center, 4 ft . NOAA normals and daily records, 1991-2020.
- Cloud cover: Miami Kendall Tamiami Exec Airport (USW00012888), 54 mi SSW of the city center, 10 ft . NOAA normals and daily records, 1991-2020.
- Daily humidity and wind: Palm Beach International Airport (722030-12844), 23 mi N of the city center, 11 ft . Hourly observations, 1991-2020.