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San Mateo Weather in July
July in San Mateo sees daytime temperatures around 28°C (82°F) and lows of 22°C (72°F) at night. Being part of the rainy season, heavy rainfall is a regular part of the day, so pack accordingly.
Rainfall in San Mateo in July
San Mateo is in the rainy season in July, with rain on around 21 days and an average of 432 mm (17 in). With high rainfall totals spread across the month, individual showers can be very heavy. Waterproof gear is strongly recommended.
Temperature in San Mateo in July
Temperatures in San Mateo in July top out at 28°C (82°F) and drop to 22°C (72°F) overnight. Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights are mild at around 22°C (72°F), which is comfortable for most people.
Sunshine in San Mateo in July
You can expect a moderate amount of sunlight, with approximately 164 hours. Even though this month is part of the wet season, you can still see the sun occasionally.July in San Mateo has its charm, but if you're looking for destinations with pleasant temperatures and sunny skies, our weather planner can help you explore other options in the world.
San Mateo Temperature in July
Min Temperature
22°C (72°F)
Max Temperature
28°C (82°F)
Chance of Rain
71%
Precipitation
432 mm (17 in)
Rainy days
21 days
Sunshine
164 hours *
Percentage Sunshine
*
* Data from: Puntarenas, Costa Rica (34 KM, 21 Miles).
San Mateo Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Mateo - and find the best time to visit.
Daily Historical Temperatures
44-year average (1976-2025)
Based on our historical records, temperatures in San Mateo typically stay consistent throughout July, with daily highs averaging around 28°C (82°F). Nights are pleasant, with lows around 20°C (68°F).
Average temperatures in July
Daily Historical Precipitation
44-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in July
Historical weather records for San Mateo in July
Browse day-by-day weather records for San Mateo spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Mateo historical weather extremes in July
Based on 30 years of weather observations in San Mateo between 1996 and 2026, these are the recorded extremes.
- On July 9, 1997, temperatures climbed to 34°C (93°F), marking the warmest July day on record.
- On July 16, 2010, San Mateo saw its coldest July day with temperatures maxing out at 22°C (72°F).
- The coldest night in July in San Mateo was on July 16, 2010, with a minimum of 13°C (55°F).
- The wettest day in July San Mateo was on July 9, 2019 with 99 mm (3.9 in) of precipitation.
Best Places in Costa Rica in July
Find out more about the weather in Costa Rica and which places have the best travel conditions in this month. See all of Costa Rica in July →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in San Mateo in July
Warm weather calls for comfortable, breathable clothing in July. 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). Also bring a poncho, it will rain a lot! Waterproof everything you can. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in San Mateo in July
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming7/10 -
Cycling7/10 -
Walking7/10 -
Camping6/10 -
Outdoor sports7/10
San Mateo 3-Day Forecast
More climate data for San Mateo
See the full San Mateo climate overview or explore weather in Costa Rica.
Popular in July
Where to go in July - average daytime high across popular destinations.
Tamarindo
31°C (88°F) Santa Teresa29°C (84°F) Cahuita29°C (84°F) Herradura28°C (82°F) Puerto Viejo de Talamanca29°C (84°F) Fortuna28°C (82°F) Jacó28°C (82°F) San José24°C (75°F) Bucket list
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