Las Vegas weather in August
August is one of the least pleasant months in Las Vegas: highs of 40°C (103°F) and about 15 mm (0.6 in) of rain on average. Nights average 25°C (77°F) and cloud cover 33% (NASA POWER, 2001–2025 averages). It is the 5th wettest month of the year and the 2nd warmest. Compared with July, it is cooler and about as wet; September brings highs of 35°C (96°F) and 9 mm (0.4 in) of rain.
Is August a good time to visit Las Vegas?
least pleasant month Weather score 57/100.
August is one of the least pleasant months for weather in Las Vegas. For better conditions, consider Mar–May, Oct–Nov.
Does it rain a lot in Las Vegas in August?
No, it is usually dry: about 15 mm (0.6 in) falls in an average August. It is the 5th wettest month of the year.
How warm is Las Vegas in August?
Days average 40°C (103°F) and nights 25°C (77°F).
Las Vegas weather by month
| Month | High | Low | Rain | Cloud | Weather |
|---|---|---|---|---|---|
| January | 14°C (57°F) | 1°C (35°F) | 18 mm | 47% | fair |
| February | 16°C (62°F) | 3°C (37°F) | 23 mm | 48% | fair |
| March | 22°C (71°F) | 7°C (44°F) | 12 mm | 45% | best |
| April | 26°C (79°F) | 11°C (51°F) | 8 mm | 40% | best |
| May | 32°C (90°F) | 16°C (61°F) | 3 mm | 35% | best |
| June | 39°C (102°F) | 22°C (71°F) | 1 mm | 25% | fair |
| July | 41°C (106°F) | 26°C (79°F) | 15 mm | 38% | least pleasant |
| August | 40°C (103°F) | 25°C (77°F) | 15 mm | 33% | least pleasant |
| September | 35°C (96°F) | 21°C (69°F) | 9 mm | 24% | fair |
| October | 27°C (81°F) | 13°C (56°F) | 13 mm | 32% | best |
| November | 20°C (67°F) | 6°C (43°F) | 12 mm | 39% | best |
| December | 13°C (55°F) | 1°C (34°F) | 18 mm | 50% | fair |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis). Page updated . How we rate months