Climate and monthly weather forecast
Fontvieille, Monaco

Situated along the Mediterranean Sea, Fontvieille is classified as having a Csb or warm summer Mediterranean climate, according to the Köppen climate classification. Verbally, this imparts the area with consistently mild and moderately wet winters, while summers are typically dry and warm. Several climatological parameters influence this weather pattern, with temperature and daylight variations playing significant roles.

Throughout the year, sea temperatures fluctuate between a low of 13.1°C (55.6°F) in February and a peak of 23.7°C (74.7°F) in August. This variance intimates a progression of four distinct seasons, from a relatively cool winter to a warm summer season. Concurrently, daylight hours vary from a minimum of 9 hours in December to a maximum of 15.4 hours in June.

Interesting outliers within these parameters occur with the arrival of summer. In July, despite a decrease in average daylight hours from 15.4 hours in June to 15.1 hours, the average sea temperature still experiences an increase, reaching a high of 23.2°C (73.8°F). These occurrences highlight the complex interplay between various climatic elements in shaping the unique weather conditions of Fontvieille.

Taking into consideration the fluctuation of climatic parameters, the optimal time to visit Fontvieille could be from late spring through to early autumn. During these months, visitors are likely to appreciate the blend of warm sea temperatures, ranging from 18°C (64.4°F) in May to 22.3°C (72.1°F) in September, and extended daylight hours, providing between 13.4 to 15.1 hours of sunlight. This pleasant combination of moderate warmth and plentiful sunlight creates suitable conditions for outdoor daytime activities.

While Fontvieille remains beautiful year-round, the most challenging period to visit would be late autumn to early winter. During these months, the sea temperature falls as low as 13.4°C (56.1°F) in November to 14.9°C (58.8°F) in December, and the location experiences its shortest days, with daylight hours dropping to 9.7 in November and reaching a low of 9 hours in December. These conditions may limit opportunities for outdoor activities, particularly for those related to the sea, due to the decreased temperatures and diminished daylight hours.

As Fontvieille transitions from winter to spring, a noticeable uptick in sea temperatures and daylight hours occurs between March and May. Sea temperatures steadily rise from 13.4°C (56.1°F) to 18°C (64.4°F), while daylight hours increase from 11.9 to 14.7 hours. These changes are indicative of Fontvieille's gradual shift into warmer seasons, paving the way for more outdoor activities and tourism.

The climatic zenith in Fontvieille arrives with summer, revealing a pleasant balance between warm temperatures and ample daylight. From June to August, sea temperatures peak from 21.8°C (71.2°F) to 23.7°C (74.7°F), coupled with daylight hours extending from 15.4 to 13.9 hours. These conditions foster an ideal environment for a broad array of summer activities, including water sports and al fresco dining.

Autumn signifies a gradual dip in temperatures and daylight hours. From September to November, sea temperatures cool from 22.3°C (72.1°F) down to 13.4°C (56.1°F), accompanied by a diminishing in daylight hours from 12.5 to 9.7. This slowing pace is characteristic of the descent into the colder months, resulting in receding opportunities for outdoor activities.

Winter, from December to February, presents the most diminished conditions in Fontvieille as sea temperatures hover between 14.9°C (58.8°F) and 13.1°C (55.6°F) and daylight hours shrink to between 9 to 9.4 hours. The period embodies the nadir of climatic conditions; however, it presents an opportunity to enjoy Fontvieille unencumbered by the tourists who flock during the warmer months.

January in Fontvieille displays oceanic influence, in which climate revolves considerably around the sea temperature, standing at an average of 13.5°C (56.3°F) this month. It is the month that experiences minimum daylight, with the sun barely shining for 9.4 hours per day. Weather in January »

Representing deep winter, February characteristically sees the sea temperature dropping to 13.1°C (55.6°F), making Fontvieille's weather seemingly cold yet stable. Comparatively, February is colder than January, exhibiting a significant drop in the sea temperature. Weather in February »

Weather in March in Fontvieille shows an improvement compared to February with a subtle rise in sea temperature to 13.4°C (56.1°F). This rise in temperature results in spring knocking at the doors towards the end of the month. It offers the potential for outdoor activities given longer and brighter days. Weather in March »

April in Fontvieille is a transitional period with the city weather slowly drifting towards warmer and longer days. The sea temperature rises to 14.7°C (58.5°F) this month resulting in milder nighttime temperatures. This change in pattern presents a welcome respite from the March cold, pushing Fontvieille towards Spring. Weather in April »

Weather in May marks the onset of summer in Fontvieille, with temperatures continually rising. An average sea temperature of 18°C (64.4°F) indicates the leave of spring and paves the way for the summer sun. Compared to April, the month of May experiences longer daylight hours and warmer temperatures. Weather in May »

June is usually a warm month in Fontvieille and one of the sunniest months, transitioning swiftly into summer. The sea temperature does a significant leap and touches 21.8°C (71.2°F), making it warmer than May and signalising summer at its peak. Weather in June »

July dominates the summer season in Fontvieille with longer, sunnier days and warmer waters. Weather in July sees a further increase in the sea temperature rising to 23.2°C (73.8°F), creating the perfect conditions for beach activities. Weather in July »

August in Fontvieille records the highest sea temperature, reaching 23.7°C (74.7°F) and thereby becoming the warmest month of the year. Nevertheless, it also marks the gradual end of the summer season. Keeping pace with July, August too, comes with long sunny days, however, toward its end nightly temperatures slightly drop. Weather in August »

September witnesses the arrival of Autumn in Fontvieille. The sea temperature averages 22.3°C (72.1°F), indicating a downfall from August's peak temperatures. Compared to the sweltering summer months, September brings cooler weather and shorter days. Weather in September »

October in Fontvieille signals the strong approach of winter with significantly shorter days. The sea temperature takes a steep drop, reaching 19.7°C (67.5°F), symbolising the end of the warm period. Comparatively, it's a noticeable transition from September to October as autumn gives in to the early onset of winter. Weather in October »

November is an exemplary display of winter vibe in Fontvieille. Sea temperature drops further to 17.4°C (63.3°F) denoting the commencement of a steady cold phase. In comparison to October, November is significantly colder with shorter daylight hours. Weather in November »

December exhibits the full swing of winter in Fontvieille, with sea temperature dropping down to 14.9°C (58.8°F), marking the coldest month of the year. Relatively, it is colder than November and comes with the shortest daylight hours, hence less sunlight. Weather in December »