Climate and monthly weather forecast
Saint-Joseph, Reunion

An examination of the climatic conditions in Saint-Joseph presents a characteristic pattern similar to the one observed in the areas classified as As under the Köppen climate system. Geographically located on Reunion Island, Saint-Joseph's climate can be described as tropical wet and dry or savanna, with significant shifts in precipitation marking the dry 'summer' season.

Periodic variations are perceivable in weather indicators, including sea temperature and daylight hours. These fluctuations contribute to the town's climate profile. The sea temperature oscillates between the yearly low of 23.6°C (74.5°F) noted in September and a peak of 28.3°C (82.9°F) in both July and August. Appreciating sunlight, the daylight hours average from 10.8 hours in June to 13.4 hours in December.

Unique patterns emerge under close scrutiny. Maximum averaged sea temperatures are observed concurrently with the smallest time in daylight. Additionally, while the length of daylight steadily increases from 10.8 hours in June to 13.4 hours in December, the sea temperature gradually dips, verifying a contra-cyclical relationship between sea temperature and daylight length.

Potential visitors to Saint-Joseph might consider the period from July to September. During these months, balmy sea temperatures ranging from 28.3°C (82.9°F) in July and August to 23.6°C (74.5°F) in September, present an appealing allure for water activities. Accompanying these alluring sea temperatures, abundant daytime hours exceeding 10 in duration provide ample opportunities for outdoor exploration and sunset viewing.

Saint-Joseph's lowest sea temperatures and an analogical decrease in daylight hours create less desirable visiting conditions from March to June. During these months, sea temperatures lower to 27.4°C (81.3°F) in March, 26.4°C (79.5°F) in April, 25.3°C (77.5°F) in May, and 24.2°C (75.6°F) in June. Moreover, daylight hours decrease incrementally, averaging 12.2 hours in March and reaching the annual low of 10.8 hours in June.

March heralds the advent of spring in Saint-Joseph, marked by a decrease in daylight hours to an average of 12.2 hours. Concurrently, sea temperatures, while lowered from the summer's high, find their footing at 27.4°C (81.3°F). In April and May, both the sea temperature and daylight hours continue to decrease, though keeping within relatively warm and pleasant intervals.

Summers in Saint-Joseph, starting in December and extending to February, are characteristically hot and lengthy in daylight hours. Coastal temperatures peak, reaching a pinnacle of 28.3°C (82.9°F) in January and February while maintaining 27.6°C (81.7°F) in December. These sweltering temperatures are accompanied by generous daylight hours that increase each month, culminating in 13.3 hours on average in February.

In the autumn months, Saint-Joseph sees a gradual decrease in both sea temperatures and daylight hours. Beginning with an average of 13.1 daylight hours in March, the figure reduces to an approximate 11.6 hours in May, marking a steady decrease. Concurrently, sea temperatures lower from 27.4°C (81.3°F) in March to 25.3°C (77.5°F) by the end of May.

In Saint-Joseph, the winter months from June to August bring a further decrease in daylight hours and sea temperatures. Sea temperatures are comparatively cool, beginning at 24.2°C (75.6°F) in June and slightly rebounding to 24.7°C (76.5°F) in August. In contrast, a definite increase in daylight hours takes place, with an increment from 10.8 hours in June to 11.4 hours in August.

In Saint-Joseph, January is synonymous with summer, welcoming a warm atmosphere on the coastal shores. The city's adjacent ocean radiates a refreshing temperature of 27.6°C (81.7°F), fostering aquatic activities. A shift from the weather conditions in December is minimal and probably unnoticeable. Weather in January »

February in Saint-Joseph sees the year's first peak in sea temperatures, an average of 28.3°C (82.9°F). Visiting the beaches remains an enticing option, facilitated by the warm, tranquil weather. February's conditions are almost identical to those of March in terms of sea temperature. Weather in February »

Weather nuances in Saint-Joseph in March remain steady from February, perpetuating an enduring summer spirit. Remarkably, the ocean maintains its peak temperature of 28.3°C (82.9°F), accentuating beach appeal as in February. From March, a gradual dip in total daylight hours begins, leading to shorter days towards April. Weather in March »

In Saint-Joseph, April signifies a clear transition towards autumn and represents the beginning of cooler months. There is a decline in sea temperature from March to 27.4°C (81.3°F), marking the end of peak warmth. The daylight hours also decrease, a trend started in March, and becoming more noticeable now. Weather in April »

May ushers in the chill of autumn in Saint-Joseph with sea temperatures receding to an average of 26.4°C (79.5°F). Outdoors transitions into a more serene ambiance, and beachside activities become less popular. Looking back at April, the weather shift is a sign of the seasonal ebb. Weather in May »

June in Saint-Joseph signals the onset of winter with the sea temperature dropping further to 25.3°C (77.5°F). It's a noticeable deviation from May's weather, and beaches see fewer footprints. In the progression from June to July, however, the decrement in sea temperature is less drastic. Weather in June »

A concrete winter feel permeates July in Saint-Joseph as the sea temperature plunges to a yearly low of 24.2°C (75.6°F). The cold ocean water discourages most of the water activities. With August on the horizon, Saint-Joseph awaits a slight rise in sea temperature. Weather in July »

With the sea temperature in Saint-Joseph rising marginally to 23.7°C (74.7°F) in August, the frosty winter starts to recede. The frigid July starts making way for a somewhat warm August. However, the months' sequential progression brings relatively longer days in August compared to July. Weather in August »

September in Saint-Joseph brings the first signs of spring as the sea temperature climbs back to 23.6°C (74.5°F). The weather narrative describes a slight escalation from August, signaling warmer months ahead. This upward trend in sea temperature develops through October. Weather in September »

October continues to ignite the spring spirit in Saint-Joseph as the sea temperature ascends to 24.2°C (75.6°F). The city experiences the joys of spring transitioning into summer. The progression to November promises a substantial incline in oceanic warmth. Weather in October »

In Saint-Joseph, November marks the pre-emptive phase of summer, raising sea temperatures to 25.3°C (77.5°F). The transformation from October is significant as summer begins to set in. The upcoming December brings the promise of peak summer warmth. Weather in November »

Saint-Joseph in December experiences the zenith of summer warmth, with the sea temperature escalating to 26.6°C (79.9°F). This phase speaks of a noticeable escalation in warmth from November. The anticipation of a new calendar year comes with the longest daylight hours. Weather in December »