Climate and monthly weather forecast
Grand-Bassam, Ivory Coast

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The climate of Grand-Bassam

Grand-Bassam rests within the geographical scope of the Am zone of the Köppen climate classification. This particular category designates a tropical monsoon climate, known for high humidity levels and substantial rainfall, especially during the rainy season.

The climate helm of Grand-Bassam revolves around a central theme; high temperatures and extensive rainfall. With average high temperatures ranging from 26°C (78.8°F) in August to 30.4°C (86.7°F) in April, the atmosphere can get quite hot. Correspondingly, the mercury level during the cooler months falls slightly, with lows recorded between 23.4°C (74.1°F) in August and 26.8°C (80.2°F) in April.

When it comes to rainfall, the weather patterns show a clear shift between two faces of nature. From January to April and then again from October to December, rainfall is relatively less, reaching a peak of 103mm (4.06") in October. The rest of the year, from May to September, reveals the rainy side of Grand-Bassam with monthly rainfall topping 200mm (7.87") in June. An interesting development to note is that the number of rainy days doesn't vary much throughout the year. It indicates a consistent, albeit strikingly diversified precipitation pattern, which could be characteristic of the tropical monsoon climate.

The sea temperature doesn't exhibit drastic fluctuations as water bodies tend to be more resistant to temperature changes. It dips from a warm 29°C (84.2°F) in April to an agreeable 24.4°C (75.9°F) in August. The humidity remains high year-round, with the lowest relative humidity recorded at 76% in January, and the highest at 87% in September.

The best time to visit Grand-Bassam

Visiting Grand-Bassam would be most enjoyable during the cooler and drier months, from November to April. During these months, daily high temperatures lay around 30°C (86°F), and rainfall is less frequent, allowing visitors to explore its tropical beauty without worrying about sudden downpours. The relative humidity also dwindles down during these months, dropping to 76% in January and offering a reprieve from the otherwise high humidity.

The worst time to visit Grand-Bassam

The period from May to September is less favorable for a visit to Grand-Bassam, owing to the heavier and frequent rainfall. June, in particular, records substantial rainfall of 200mm (7.87"), and the relative humidity touches its yearly upper limit, with an average of 87% in September. During this time, sunny days are fewer, and the general weather is cloudy and wet, which may hinder outdoor activities.

Spring weather in Grand-Bassam

In stark contrast to many temperate regions, Grand-Bassam's spring months from March to May host a significantly wetter climate. Rainfall averages increase from 55mm (2.17") in March to a substantial 200mm (7.87") by June. Temperatures during this period rise slightly, with high temperatures peaking around 30°C (86°F) and low temperatures fluctuating between 26.5°C (79.7°F) and 26.1°C (79°F).

Summer weather in Grand-Bassam

For the period of June through August, also known as the summer months in many parts of the world, Grand-Bassam witnesses a cooling trend, particularly in sea temperatures. Sea temperatures drop to a low of 24.4°C (75.9°F) in August. Rainfall remains heavy in June at 200mm (7.87"), then tapers off to 83mm (3.27") by August. The humidity levels peak during these months, soaring up to 85%.

Autumn weather in Grand-Bassam

Come September, the rainfall returns to a steadier pattern. From September through to November, rainfall averages between 51mm (2.01") and 95mm (3.74"), while temperatures remain consistently high. High temperatures glide between 26.5°C (79.7°F) and 28.9°C (84°F), while the lows hover around 23.9°C (75°F) to 25.2°C (77.4°F).

Winter weather in Grand-Bassam

Winter manifests itself rather subtly in Grand-Bassam. December ushers in slightly cooler sea temperatures of 28.4°C (83.1°F), down from 28.7°C (83.7°F) in November. High temperatures maintain their mark near 30°C (86°F), whereas low temperatures often measure above 25°C (77°F). While it may not be winter in the conventional sense, it still offers a slightly cooler environment and a lessening in the rainfall count, with averages falling to 74mm (2.91").

Weather in January

Compared with December temperatures in Grand-Bassam, Ivory Coast, January sees a slight increase. On its warmest days, temperatures can reach 30°C (86°F), characterized by high humidity levels. This period, often typified by moderate rainfall, experiences precipitation on approximately 16.5 days of the month. Weather in January »

Weather in February

February's weather in Grand-Bassam, Ivory Coast, continues the tropical trend set by January, albeit with more rainfall. On average, rainfall increases to 47mm (1.85"), with the city experiencing rain on roughly 19.6 days of the month. Weather in February »

Weather in March

In March, Grand-Bassam, Ivory Coast, observes a slight rise in temperature, peaking at approximately 30.2°C (86.4°F). The weather pattern established in February persists, with a corresponding increase in humidity and rainy days. Weather in March »

Weather in April

April in Grand-Bassam, Ivory Coast, continues showcasing the stable tropical climate with temperatures peaking marginally higher at 30.4°C (86.7°F). The similarities in weather conditions between March and April underline the consistency of the climate in this region. Weather in April »

Weather in May

The weather in May in Grand-Bassam, Ivory Coast, expresses a clear shift in patterns compared to the preceding months. Remarkably, rainfall nearly doubles to 98mm (3.86"), distinguishing May as the onset of the wetter part of the year. Weather in May »

Weather in June

June marks the peak of precipitation in Grand-Bassam, Ivory Coast, with recorded averages of 200mm (7.87") rainfall. This constitutes the maximum level of annual rainfall, setting June apart as the wettest month of the year. These conditions coincide with a noticeable drop in temperature and a decrease in sunlight hours, thereby amplifying humidity. Weather in June »

Weather in July

In July, Grand-Bassam, Ivory Coast, experiences a perceptible drop in rainfall, down to 83mm (3.27"), in line with diminishing temperatures. This relief from intense rainfall provides a welcome change from June’s peak precipitation, resulting in marginally cooler and drier conditions. Weather in July »

Weather in August

In August, the weather in Grand-Bassam, Ivory Coast shows a marked decrease in both sea and air temperatures, making it one of the coolest months of the year. Rainfall reduces further to 32mm (1.26"), adding to the cooler conditions. Weather in August »

Weather in September

As August transitions into September in Grand-Bassam, Ivory Coast, rainfall amounts rise to 51mm (2.01"). The weather begins to transition back towards the warmer and wetter patterns observed earlier in the year. Temperatures show a moderate increase more reminiscent of the first half of the year, keeping humidity levels high. Weather in September »

Weather in October

October in Grand-Bassam, Ivory Coast, welcomes more familiar tropical weather patterns as temperatures rise to 27.7°C (81.9°F). The city experiences increased rainfall, averaging 103mm (4.06"), and marks one of the wettest months of the year. Weather in October »

Weather in November

November witnesses the continuation of tropical conditions with high temperatures, reaching a peak of 28.9°C (84°F), in Grand-Bassam, Ivory Coast. Although rainfall decreases to 95mm (3.74"), the high temperatures and constant cloud coverage heighten humidity. Weather in November »

Weather in December

December in Grand-Bassam, Ivory Coast, is marked by a slight decrease in temperature, falling to an average low of 25.6°C (78.1°F). With rainfall dropping to 74mm (2.91"), the city begins to trend towards drier conditions. The combination of reduced rainfall, ample sunlight and maintained high humidity, establishes a warmer atmosphere. Weather in December »

Frequently asked questions

What is the least humid month in Grand-Bassam?

With an average relative humidity of 76%, January is the least humid month in Grand-Bassam.

How many days does it rain in Grand-Bassam?

Throughout the year, in Grand-Bassam, there are 267.7 rainfall days, and 933mm (36.73") of precipitation is accumulated.

What is the month with the most sunshine in Grand-Bassam?

The months with the most sunshine in Grand-Bassam, Ivory Coast, are January and April, with an average of 9.2h of sunshine.

What are the months with the highest UV index in Grand-Bassam?

The months with the highest UV index in Grand-Bassam, Ivory Coast, are January through June, October through December, with an average maximum UV index of 7.

What are the warmest months in Grand-Bassam?

Grand-Bassam, Ivory Coast, records the warmest temperatures in April, averaging a high of 30.4°C (86.7°F) and a low of 26.8°C (80.2°F).

When is the sea warmest in Grand-Bassam?

April is the month with the warmest seawater in Grand-Bassam, with an average sea temperature of 29°C (84.2°F).

What is the wettest month in Grand-Bassam?

The month with the most rainfall is June, when the rain falls for 26.3 days and typically aggregates up to 200mm (7.87") of precipitation.

When are the longest days in Grand-Bassam?

With an average of 12h and 24min of daylight, June has the longest days of the year.

What are the months with the least sunshine in Grand-Bassam?

The months with the least sunshine in Grand-Bassam, Ivory Coast, are July and August, with an average of 5.7h of sunshine.

What is the month with the lowest UV index in Grand-Bassam?

The months with the lowest UV index in Grand-Bassam, Ivory Coast, are July through September, with an average maximum UV index of 6.

What are the coldest months in Grand-Bassam?

With average high temperatures of 26°C (78.8°F) and lows of 23.4°C (74.1°F), August is the coldest month.

What is the driest month in Grand-Bassam?

The month with the least rainfall in Grand-Bassam is August, when the rain falls for 19.8 days and typically collects 32mm (1.26") of precipitation.

When is the sea coldest in Grand-Bassam?

With an average sea temperature of 24.4°C (75.9°F), August is the month with the coldest seawater in Grand-Bassam, Ivory Coast.

What is the most humid month in Grand-Bassam?

The most humid month is September, with an average relative humidity of 87%.

What is the month with the shortest days in Grand-Bassam?

With an average of 11h and 48min of daylight, December has the shortest days of the year in Grand-Bassam, Ivory Coast.

Is there Daylight Saving Time (DST) in Grand-Bassam?

Grand-Bassam does not observe Daylight Saving Time (DST). GMT timezone is used over the entire year.

Average temperature
Grand-Bassam, Ivory Coast

Average temperature - Grand-Bassam, Ivory Coast

The warmest month (with the highest average high temperature) is April (30.4°C).
The month with the lowest average high temperature is August (26°C).

The month with the highest average low temperature is April (26.8°C).
The coldest month (with the lowest average low temperature) is August (23.4°C).

Average pressure
Grand-Bassam, Ivory Coast

Average pressure - Grand-Bassam, Ivory Coast

The month with the highest atmospheric pressure is July (1014mbar).
The months with the lowest atmospheric pressure are February and March (1010mbar).

Average wind speed
Grand-Bassam, Ivory Coast

Average wind speed - Grand-Bassam, Ivory Coast

The windiest month (with the highest average wind speed) is August (14.4km/h).
The calmest month (with the lowest average wind speed) is December (10.2km/h).

Average humidity
Grand-Bassam, Ivory Coast

Average humidity - Grand-Bassam, Ivory Coast

The month with the highest relative humidity is September (87%).
The month with the lowest relative humidity is January (76%).

Average rainfall
Grand-Bassam, Ivory Coast

Average rainfall - Grand-Bassam, Ivory Coast

The wettest month (with the highest rainfall) is June (200mm).
The driest month (with the least rainfall) is August (32mm).

Average rainfall days
Grand-Bassam, Ivory Coast

Average rainfall days - Grand-Bassam, Ivory Coast

The month with the highest number of rainy days is November (28.2 days).
The month with the least rainy days is January (16.5 days).

Average sea temperature
Grand-Bassam, Ivory Coast

Average sea temperature - Grand-Bassam, Ivory Coast

The best month for swimming (with the highest average sea temperature) is April (29°C).
The coldest month (with the lowest average sea temperature) is August (24.4°C).

Average daylight / Average sunshine
Grand-Bassam, Ivory Coast

Average daylight / Average sunshine - Grand-Bassam, Ivory Coast

The month with the longest days is June (Average daylight: 12h and 24min).
The month with the shortest days is December (Average daylight: 11h and 48min).

The months with the most sunshine are January and April (Average sunshine: 9h and 12min).
The months with the least sunshine are July and August (Average sunshine: 5h and 42min).

Average sunshine days
Grand-Bassam, Ivory Coast

Average sunshine days - Grand-Bassam, Ivory Coast

The month with the most sunshine days is January (11.2 days).
The month with the least sunshine days is November (1.1 days).

Average UV index
Grand-Bassam, Ivory Coast

Average UV index - Grand-Bassam, Ivory Coast

The months with the highest UV index are January, February, March, April, May, June, October, November and December (UV index 7).
The months with the lowest UV index are July, August and September (UV index 6).

Average visibility
Grand-Bassam, Ivory Coast

Average visibility - Grand-Bassam, Ivory Coast

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).

Grand-Bassam, Ivory Coast

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