San Bernardino Weather in August
Thinking of visiting San Bernardino in August? Expect high temperatures reaching 27°C (81°F) during the day, dropping to 14°C (57°F) at night, with the driest conditions of the year.
Rainfall in San Bernardino in August
Take advantage of the dry conditions this month, with minimal rain expected. Based on our climate data of the past 30 years, about 5 days of rain are anticipated, with 71 mm (2.8 in) on average. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.
Temperature in San Bernardino in August
August is a good time to be in San Bernardino. Days are perfect, reaching 27°C (81°F), with nights around 14°C (57°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights cool down to 14°C (57°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in San Bernardino in August
The city usually sees around 225 hours of sunlight, indicating many sunny days — a great month for sightseeing.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Paraguay, check out our San Bernardino's climate page.
San Bernardino Temperature in August
Min Temperature
14°C (57°F)
Max Temperature
27°C (81°F)
Chance of Rain
16%
Precipitation
71 mm (2.8 in)
Rainy days
5 days
Humidity
70% *
Sunshine
225 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Bernardino typically stay consistent throughout August, with daily highs averaging around 27°C (81°F). Nights are pleasant, with lows typically ranging from 12°C (54°F) to 16°C (61°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather for San Bernardino in August
Browse day-by-day weather records for San Bernardino spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Bernardino historical weather extremes in August
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in San Bernardino.
- The warmest day in August was on August 29, 2020, with a maximum of 40°C (104°F).
- Nighttime temperatures dropped to 0°C (32°F) on August 1, 1993, marking the coldest August night on record.
Best Places in Paraguay in August
Find out more about the weather in Paraguay and which places have the best travel conditions in this month. See all of Paraguay in August →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in San Bernardino in August
Warm but pleasant conditions in San Bernardino in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in San Bernardino 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 Paraguay, check out our San Bernardino's climate page.
Temperature Rainfall Sunshine Humidity
See the full San Bernardino climate overview or explore weather in Paraguay.
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