Climate and monthly weather forecastOlhão, Portugal

The climate of Olhão

Nestled in the southern part of Portugal, Olhão falls under the Köppen climate classification of Csa. This signifies Mediterranean climate conditions, distinguished by hot summers and winters that are relatively mild. The compilation of climatological data over the course of the year provides a comprehensive schematic of the weather patterns in this region.

Temperature variations in Olhão range from a low of 11.2°C (52.2°F) up to a high of 27.1°C (80.8°F). Considerable fluctuation in humidity is not observed, with monthly averages steadily hovering between 62 and 74%. Rainfall totals remain modest, with a peak of 19mm (0.75") in November and minimal precipitation of 1mm (0.04") between June to August. A similar pattern emerges with the number of rainfall days, reaching a high of 8.2 days in April and as low as 0.8 days in August.

Exploring other parameters, interesting trends surface. Sea temperatures shift between a low of 15.9°C (60.6°F) in March to a high of 22.1°C (71.8°F) come August. Sunshine hours exhibit considerable flexing, pushing from 6.1 hours in January, peaking at 11.9 hours in July, before descending to 6.4 hours by December's end. These shifts coincide neatly with the changes in daylight hours, hinting at an intricate interconnected system beneath the surface.

The best time to visit Olhão

Records indicate that the most appealing time to visit Olhão is between May and September. During these months, temperatures hover between 21.3°C (70.3°F) to 27.1°C (80.8°F), contributing to the desirability of the region for visitors seeking a Mediterranean retreat. Meanwhile, the mercury in sea temperatures rises to a high of 22.1°C (71.8°F) in August, perfect for those keen on beachfront activities. Moreover, rainfall drops to its lowest during this period, ensuring uninterrupted outdoor adventures.

The worst time to visit Olhão

Drawing from historical data, it can be inferred that the least favorable period to travel to Olhão is from late November to early February. In these months, temperatures plummet to their lowest, with the mercury dropping to 11.2°C (52.2°F) to 12.7°C (54.9°F). Concurrently, rainfall increases significantly, rising to a peak of 19mm (0.75") in November. Coupled with the dwindling daylight hours, this period is the least attractive for tourists.

Spring weather in Olhão

March, April, and May bring spring in Olhão. With temperatures ranging from 16.8 degrees to 21.3°C (70.3°F), these months provide perfectly mild weather conditions. Rainfall during this period is moderate, peaking at 17mm (0.67") in April and eventually tapering off to 8mm (0.31") in May. The increase in daylight hours to an average of 14.2 hours in May also brings an influx of sun, further enhancing the allure of the season.

Summer weather in Olhão

Summers in Olhão run from June to August with temperatures peaking at 27.1°C (80.8°F). The period garners the least amount of rainfall, dropping to a mere 1mm (0.04") and making it an ideal time to participate in outdoor activities. Added to this, the exquisite sea temperature ripe at 22.1°C (71.8°F) in August allows for delightful beachside escapades and nautical pursuits.

Autumn weather in Olhão

The autumn season, spanning September to November, witnesses a gradual decline in temperatures from 24.8 degrees to 18.5°C (65.3°F). Rainfall levels during this season see a steady increment, mounting to a year's high of 19mm (0.75") in November. Despite the increment in rainfall, the season is marked by comfortable weather conditions and lovely hues, making the town a scenic experience.

Winter weather in Olhão

Winter months of December to February in Olhão register temperatures from 16.5 degrees to 11.3°C (52.3°F). Rainfall is considerably high during these months, with indices resting at 14mm (0.55") in December and January. Despite this, periods of sunshine are still prevalent, with about 6.4 hours per day in December. Even though the weather may be a little chilly, the natural beauty of Olhão continues to draw visitors who enjoy the quieter and less crowded off-peak season.

Weather in January

January in Olhão, Portugal, heralds the start of the year with relatively mild weather. Compared to the adjoining December, this month sees a slight improvement in sunshine hours while transitioning from winter into the early phase of spring. Weather in January »

Weather in February

February showcases a continuation of the mild climatic patterns found in January in Olhão. Notably, the humidity percentage experiences the first significant drop of the year, down to 72% from 73% earlier in January. An increase in sea temperature from 16.4°C (61.5°F) to 16.1°C (61°F) and lower wind speeds signal a transition towards more stable weather patterns. Weather in February »

Weather in March

In March, the weather throughout Olhão continues its slow but steady transition towards spring. As compared to February, residents and visitors can expect a further increase in average daily temperatures. The region also bears witness to an increase in rainfall from 9mm (0.35") in February to 12mm (0.47") in March. Weather in March »

Weather in April

As April sets in, Olhão, Portugal turns warmer, indicative of the full arrival of spring. Compared to March, there is a noticeable rise in average temperatures and an increase in relative humidity from 73% to 74%. Temperatures can reach as high as 18.3°C (64.9°F), making it one of the warmer months in the first half of the year. Weather in April »

Weather in May

May brings the unmistakable signs of impending summer to Olhão. The month sees a dramatic reduction in rainfall, down to a mere 8mm (0.31") from 17mm (0.67") in April. Temperature swings become more substantial with a high of 21.3°C (70.3°F), indicating the arrival of hotter days. Weather in May »

Weather in June

June in Olhão is the official start of the dry and warm summer months. The previous month's average temperatures climb further to a pleasant 23.8°C (74.8°F). Meager rainfall of 1mm (0.04") also sets the stage for wonderfully dry days ahead. Weather in June »

Weather in July

The weather in July maintains the warm trend of the preceding summer months in Olhão. Compared to June, the sea temperature peaks at 21.8°C (71.2°F), offering the best conditions for water sports and activities. With an average temperature high of 26.2°C (79.2°F) but also the least cloud cover measured at 4%, days may feel hot but are mostly clear. Weather in July »

Weather in August

August continues the pleasant trend of warm weather in Olhão. Yet, the highest temperature of the year is recorded in August, reaching 27.1°C (80.8°F). The relative humidity also drops down to 62% making the heat a bit more bearable. Weather in August »

Weather in September

September in Olhão signifies the beginning of a gentle transition from the warm summer to the cooler autumn months. Compared to August, there is a notable shift in the average temperature, signaling cooler days. Rainfall also sees a slight increase from 1mm (0.04") to 3mm (0.12"), marking the end of the summer drought. Weather in September »

Weather in October

Olhão in October continues its descent into autumn. A noticeable difference is felt in the climate from September as temperatures begin to fall. Average sea temperatures decrease from 21.6°C (70.9°F) to 21.3°C (70.3°F), marking a reduction in water-bound activities. Weather in October »

Weather in November

November witnesses further dip in temperatures and an onset of winter in Olhão. A significant drop in average high temperature from 22.2°C (72°F) to 18.5°C (65.3°F) indicates the approach of the colder months. Rainfall also continues its upward trend from 14mm (0.55") to 19mm (0.75"), making it one of the rainier times of the year. Weather in November »

Weather in December

December rings in the winter season in Olhão, Portugal. The last month of the year sees the city’s temperatures drop further from November. A sharp decrease in the sea temperature to 17.4°C (63.3°F) brings the year’s aquatic activities to a halt. Weather in December »