Climate and monthly weather forecast
Valparaíso, Chile

Valparaíso, positioned off the southwestern Pacific coastline of Chile, basks under the Mediterranean, warm summer type of climate (Csb) as categorized by the Köppen climate classification. It portrays a distinct weather pattern marked by warm summers and cool winters, moderated maritime influence, and an interesting rainfall distribution across the year.

The annual temperature range in Valparaíso extends from 9.2°C (48.6°F) to 20.8°C (69.4°F), indicating mild climatic conditions throughout the year. The highest temperatures fall mostly between January and February, reaching up to 20.8°C (69.4°F), while the cooler months, less than 15°C (59°F), span from June to August. A similar trend can be perceived in seawater temperatures, getting to a high of 17.9°C (64.2°F) in February and declining to 13.1°C (55.6°F) in July.

Humidity levels hover between 70% to 80% across different months, the highest being in the months surrounding the winter season, between May to August. Following this, rainfall shows a considerable increase from 0mm (0") in February to peak levels of 111mm (4.37") in July, simultaneously hiking the rainfall days from no rain in February to 6.3 days in July. This region witnesses diminished precipitation from October to April, with rainfall levels staying below 13mm (0.51").

Sunlight availability gets into the 14 hours range per day in December and January, only to drop to 10 hours a day from June to August. In concert with the atmospheric conditions, the UV index strikes a maximum in January and December with a score of 12 and demonstrates a minimum of 3 from June to August. Correspondingly, the sunshine duration has longer periods of 9 hours a day in January, shortening to 2.7 hours by June.

Taking into account all climatic parameters, the most favourable time to visit Valparaíso lies between November and April. During this period, the city experiences mild temperature ranges from 15.4°C (59.7°F) to 20.8°C (69.4°F), combined with quite low levels of rainfall below 13mm (0.51"). It is also noteworthy that the sunshine duration is well extended from 5.5 hours to 9 hours a day, suggesting a plentiful opportunity to explore outdoor activities and sightseeing options.

Conversely, the time frame from May to August may be challenging for those who are not inclined towards cooler temperatures and increased rain. During these months, average temperatures drop down to 9.2°C (48.6°F) with rainfall peaking at 111mm (4.37") in July. Limited daylight hours from 10 to 10.4 hours and less sunshine ranging from 2.7 to 3.7 hours a day also characterize this period.

In spring, from September to November, Valparaíso witnesses increasing warmth with temperatures fluctuating between 9.5°C (49.1°F) and 18.2°C (64.8°F). Daylight starts to extend from 11.9 hours to 13.8 hours while the rainfall shows a declining trend from 27mm (1.06") to 8mm (0.31"). This season also sees an increase in UV index values from 6 to 11, hinting at bright, clear days.

Summer months from December to February in Valparaíso present warm conditions with the average temperatures hovering from 13.5°C (56.3°F) to 20.8°C (69.4°F). With prolonged daylight hours from 14 to 13.3 hours and the city enjoys abundant sunshine ranging from 8.5 to 9 hours a day. Rain is almost non-existent to minimal during these months, making it an ideal time for any visit.

The autumn season from March to May ushers in cooler weather. Specifically, temperatures oscillate between 10.8°C (51.4°F) and 19.4°C (66.9°F). While the daylight duration shortens from 12.3 to 10.4 hours, the rainfall shows a marked increase from 4mm (0.16") to 55mm (2.17"). This is accompanied by diminishing sunshine hours from 7 to 3.7 hours a day.

Winter in Valparaíso, spanning from June to August, is characterized by the coldest temperatures of the year ranging from 9.2°C (48.6°F) to 14.8°C (58.6°F). Rainfall peaks, reaching up to 111mm (4.37"), and rainfall days increase significantly from 5.6 to 6.3 days. Daylight hours are at their shortest, ranging from 10 hours to 10.2 hours, while sunshine duration remains low between 2.7 to 3.8 hours per day.

The start of the year in Valparaíso, Chile, brings pleasant weather with a sense of freshness that complements the sunny days. January generally implies consistent weather patterns with no abrupt changes. In this month, temperatures show a range from 13.5°C (56.3°F) to 20.8°C (69.4°F), manifesting the city's mild summer atmosphere. Weather in January »

Moving on to February, Valparaíso, Chile experiences similar weather characteristics to the preceding month. The comfortable summer continues, marked with insignificantly lower temperatures compared to January. There's an absence of rainfall as it's the driest month, making it perfect for enjoying outdoor tourist spots. Weather in February »

March marks the transition from summer to autumn in Valparaíso, Chile. The weather turns slightly cooler than February, indicating the onset of the autumn season. The pleasant shift in temperatures encourages sightseeing and exploration around the city's charming spots. Weather in March »

April introduces a perceptible change in Valparaíso's weather as the city steps into full-fledged autumn. A further decrease in temperatures and increase in rain bring a refreshing touch to the overall climate. The city receives an average rainfall of 13mm (0.51"), an appreciable rise from the preceding month. Weather in April »

Come May, and Valparaíso, Chile encounters its first significant wave of chill for the year. This month is characterized by the considerable dip in temperature and notable rise in rain. At 55mm (2.17"), May records the commencement of heavy rainfalls, hinting at the winter season's advent. Weather in May »

June brings along the cool winter vibe with increased rainfall and reduced temperatures in Valparaíso, Chile. As the city transitions into its coldest period, indoor recreational activities become more frequented. The humidity level reaches 80%, indicating the moist weather condition. Weather in June »

July signifies peak winter in Valparaíso, with the lowest average high temperature at 14.3°C (57.7°F). Despite the drop in temperature, Valparaíso maintains its allure with indoor festivities and vibrant nightlife. The weather, characterized by high humidity and significant rainfall, offers a unique flavor to the city. Weather in July »

August brings in a slight increase in temperatures, signaling the end of peak winter in Valparaíso. Though the weather remains cold, it begins to show signs of moderation. The precipitation sees a decrease from its previous high, settling at 60mm (2.36") for the month. Weather in August »

September in Valparaíso, Chile begins to hint at spring's advent, with temperatures showing a steady rise. The city starts shaking off the winter chill and greets the freshness of the approaching season. The rainfall shows a drop to 27mm (1.06"), indicating the end of the high rainfall period. Weather in September »

As October rolls in, spring makes its presence felt in Valparaíso. With the weather turning warmer, the city comes alive with its vibrant hues and blossoming flowers. A further dip in rainfall positions this month as one of the drier parts of the year. Weather in October »

November continues the pleasant weather trend in Valparaíso, with further warming temperatures. The city, now in full bloom, presents an enchanting sight with its colorful landscapes. Rainfall records a decrease, making room for more bright and sunny days. Weather in November »

December brings the onset of summer in Valparaíso, offering a warm end to the year. The weather pattern shows a rise in temperature compared to the previous month. With a meager 1mm (0.04") rainfall, the climatic condition becomes relatively dry, marking December as the second driest month of the year. Weather in December »