Cabo San Lucas Weather in August
August in Cabo San Lucas sees daytime temperatures around 33°C (91°F) and lows of 26°C (79°F) at night. With around 61 mm (2.4 in) of rainfall expected, it's worth packing a rain jacket.
Rainfall in Cabo San Lucas in August
Expect around 4 days of rain based on historical data, with 61 mm (2.4 in) average. When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.
Temperature in Cabo San Lucas in August
In August, expect very high temperatures in Cabo San Lucas, with highs of 33°C (91°F) and lows of 26°C (79°F) at night. If you're spending a lot of time outdoors, it helps to plan around the warmer part of the day. At 26°C (79°F) overnight, the heat doesn't let up much after dark. If you're staying somewhere without air conditioning, a cold shower before bed and keeping the air moving can help. With these average temperatures, expect occasional spikes in warmth. Wear light fabrics and stay cool by hydrating regularly.
Average water temperature in August
At 29°C (84°F), the water feels bath-warm. Fine for swimming, but those looking for a cooling swim may be a bit disappointed.If your ideal day consists of dry skies and pleasant temperatures, January, February, March, April and December typically offer the best circumstances for Cabo San Lucas.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Cabo San Lucas's climate page.
Cabo San Lucas Temperature in August
Min Temperature
26°C (79°F)
Max Temperature
33°C (91°F)
Water Temperature
29°C (84°F)
Chance of Rain
14%
Precipitation
61 mm (2.4 in)
Rainy days
4 days
Daily Historical Temperatures
30-year average (1992-2025)
Based on our historical records, temperatures in Cabo San Lucas typically stay consistent throughout August, with daily highs averaging around 33°C (91°F). Nights are warm, with lows around 27°C (81°F).
Average temperatures in August
Historical weather for Cabo San Lucas in August
Browse day-by-day weather records for Cabo San Lucas spanning 36 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Cabo San Lucas historical weather extremes in August
Based on 19 years of weather observations in Cabo San Lucas between 2006 and 2025, these are the recorded extremes.
- The hottest August day on record in Cabo San Lucas reached 37°C (99°F) (August 15, 2020).
- The coldest August day was on August 16, 2012, with a maximum of 26°C (79°F).
- Cabo San Lucas registered its coldest August night on August 9, 2016, with temperatures dropping to 21°C (70°F).
Best Places in Mexico in August
Find out more about the weather in Mexico and which places have the best travel conditions in this month. See all of Mexico in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Cabo San Lucas in August
Warm weather calls for comfortable, breathable clothing in August. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Rain is likely on several days, so bring a good rain jacket. The water temperature sits at about 29°C (84°F), making it perfect for swimming and water activities. Don't forget to pack your favorite swimwear and perhaps some snorkel gear.What To Do in Cabo San Lucas in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Mexico, check out our Cabo San Lucas's climate page.
Temperature Rainfall Water Temp
See the full Cabo San Lucas climate overview or explore weather in Mexico.
