Caldas da Rainha, a charming city in central Portugal, experiences a Mediterranean climate with mild temperatures year-round. The city’s weather patterns are influenced by its proximity to the Atlantic Ocean, creating pleasant conditions for residents and visitors alike.
Caldas da Rainha typically enjoys warm, dry summers and cool, wet winters, with average temperatures ranging from 10°C (50°F) in winter to 23°C (73°F) in summer. Spring and autumn offer comfortable transitional periods, ideal for outdoor activities and exploring the city’s attractions.
The city’s weather contributes to its appeal as a tourist destination, with ample sunshine during the summer months attracting beachgoers to nearby coastal areas. Rainfall is more common in winter, nourishing the region’s lush landscapes and replenishing local water sources.
Caldas da Rainha Climate Overview
Caldas da Rainha enjoys a Mediterranean climate with mild temperatures year-round. The city’s weather is influenced by its coastal location and surrounding geography.
Geographic Influence on Weather
Caldas da Rainha’s climate is shaped by its proximity to the Atlantic Ocean and the Serra dos Candeeiros mountain range. The ocean moderates temperatures, preventing extreme heat or cold. The mountains to the east provide some protection from continental influences.
The city’s elevation of about 100 meters above sea level contributes to slightly cooler temperatures compared to coastal areas. This geographic positioning results in a unique microclimate that benefits both residents and visitors.
Seasonal Weather Patterns
Summers in Caldas da Rainha are warm and dry. Average high temperatures range from 25°C to 28°C (77°F to 82°F) between June and September. Winters are mild and wet, with average lows of 7°C to 9°C (45°F to 48°F) from December to February.
Spring and autumn are transitional seasons with pleasant temperatures. Spring sees increasing sunshine and occasional rain showers. Autumn brings cooler temperatures and more frequent rainfall as winter approaches.
Annual precipitation averages around 700-800 mm, with most rainfall occurring between October and April. Snowfall is rare in Caldas da Rainha due to its mild winter temperatures and coastal influence.
Average Temperature Ranges
Caldas da Rainha experiences mild temperatures throughout the year, with distinct seasonal variations. The region’s climate is influenced by its proximity to the Atlantic Ocean.
Monthly Highs and Lows
In January, the coldest month, average highs reach 15°C (59°F) while lows dip to 8°C (46°F). August, the warmest month, sees average highs of 26°C (79°F) and lows of 16°C (61°F).
Spring months (March to May) have highs between 17-21°C (63-70°F) and lows of 9-12°C (48-54°F). Autumn (September to November) experiences similar temperatures, with highs of 18-24°C (64-75°F) and lows of 11-14°C (52-57°F).
Variation Throughout the Year
Temperature variations in Caldas da Rainha follow a predictable pattern. Winter months (December to February) are cool but rarely freezing, with daytime temperatures around 15-16°C (59-61°F).
Summer (June to August) brings warmer weather, with temperatures typically ranging from 23-26°C (73-79°F) during the day. Nighttime temperatures in summer remain comfortable, usually not dropping below 15°C (59°F).
The transitional seasons of spring and autumn offer moderate temperatures. These periods are characterized by gradual changes as the region shifts between the cooler winter and warmer summer months.
Precipitation and Humidity
Caldas da Rainha experiences a Mediterranean climate with distinct wet and dry seasons. Rainfall patterns and humidity levels play crucial roles in shaping the local weather conditions.
Rainfall Distribution
Caldas da Rainha receives most of its precipitation during the winter months. The wettest period typically occurs from October to March, with November and December often being the rainiest.
Average annual rainfall in Caldas da Rainha is around 700-800 mm. Winter storms can bring heavy downpours, occasionally leading to localized flooding in low-lying areas.
Summers are generally dry, with July and August seeing minimal rainfall. This creates a stark contrast between the lush green landscapes of winter and the drier appearance in summer.
Humidity Levels and Comfort
Humidity in Caldas da Rainha varies throughout the year, influenced by its proximity to the Atlantic Ocean. Average relative humidity ranges from 65% to 80%.
Mornings tend to be more humid, often with fog or mist, especially in autumn and winter. As the day progresses, humidity levels usually decrease.
Summer humidity can make temperatures feel warmer than they actually are. This effect is more noticeable in July and August, potentially causing discomfort during heatwaves.
Winter humidity, combined with cooler temperatures, can create a damp feeling. This makes the perceived temperature seem lower than the actual reading on thermometers.
Wind and Sunlight Data
Caldas da Rainha experiences distinct wind patterns and sunlight hours that shape its climate. These factors influence daily weather conditions and seasonal variations in the region.
Dominant Wind Patterns
The prevailing winds in Caldas da Rainha typically come from the northwest. These winds bring cooler air from the Atlantic Ocean, moderating temperatures year-round.
In summer, sea breezes provide relief from heat, especially in the afternoons. Wind speeds average 10-15 km/h during this season.
Winter sees stronger winds, with speeds often reaching 20-25 km/h. Occasional storms can bring gusts up to 60 km/h, particularly in coastal areas.
Average Sunlight Hours
Caldas da Rainha enjoys ample sunshine throughout the year. Summer months (June to August) see the most sunlight, with average daily sunshine ranging from 10 to 12 hours.
Winter (December to February) experiences shorter days, with sunlight hours dropping to 5-6 per day. Spring and autumn offer moderate sunlight, typically 7-9 hours daily.
The region receives approximately 2,500 to 2,800 hours of sunshine annually. This abundance of sunlight contributes to the area’s pleasant climate and supports local agriculture.