San Bernardino Weather in April
April in San Bernardino averages 30°C (86°F) during the day and 19°C (66°F) at night. Quite a bit of rainfall is typical this month, with around 153 mm (6 in) on average. An umbrella is a good idea.
Rainfall in San Bernardino in April
Climate statistics over the past 30 years suggest around 6 days of rain, with 153 mm (6 in) average for the month. 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 April
April in San Bernardino brings high temperatures, with highs of 30°C (86°F) and nights around 19°C (66°F). This kind of day-to-night contrast is typical for this time of year. Nights drop to around 19°C (66°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in San Bernardino in April
Expect sunny days throughout the month, with an estimated 231 hours of sunshine. This makes it a pleasant time to visit San Bernardino.If you prefer enjoying temperate temperatures and rain-free days, July and August typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.
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 April
Min Temperature
19°C (66°F)
Max Temperature
30°C (86°F)
Chance of Rain
20%
Precipitation
153 mm (6 in)
Rainy days
6 days
Humidity
75% *
Sunshine
231 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in San Bernardino typically drop from around 30°C (86°F) at the start of April to approximately 27°C (81°F) by the end. Nights are pleasant, with lows typically ranging from 17°C (63°F) to 21°C (70°F).
Average temperatures in April
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 April
Historical weather for San Bernardino in April
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 April
According to our 50 years of weather records for San Bernardino, the following extremes were recorded between 1976 and 2026.
- The warmest day in April was on April 3, 2024, with a maximum of 38°C (100°F).
- On April 29, 2012, San Bernardino saw its coldest April day with temperatures maxing out at 16°C (61°F).
- The coldest night in April in San Bernardino was on April 17, 1999, with a minimum of 7°C (45°F).
Best Places in Paraguay in April
Find out more about the weather in Paraguay and which places have the best travel conditions in this month. See all of Paraguay in April →
perfect weather
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tolerable
unpleasant
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What to Wear in San Bernardino in April
Warm temperatures in April make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Heavy rain is guaranteed, please bring a good poncho and waterproof everything! 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 April
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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