Climate and monthly weather forecastBiro, Benin

The climate of Biro

Biro, a city nestled within the boundaries of Benin, experiences a unique blend of weather conditions throughout the year denoting an Aw Köppen climate type. The city lies within a tropical wet and dry or savanna climate zone, experiencing significant seasonal variations in temperature, humidity, and rainfall.

A glance at the monthly average temperatures reveals peaks and troughs across the year. The highest average temperature for Biro is registered at 39.2°C (102.6°F) in March, while the lowest average of 28.4°C (83.1°F) unfolds in August. A seasonal change is observed in the high temperatures starting from 36.8°C (98.2°F) in January, escalating to 39.2°C (102.6°F) in March, and then gradually dropping to 28.4°C (83.1°F) by August. Similarly, fluctuations are detected in the low temperatures with a record of 24.8°C (76.6°F) in April then slowly dipping to 21.5°C (70.7°F) in August.

Notably, Biro's precipitation pattern follows a decidedly tropical rhythm. It presents heavy rainfall contrasting sharply with a prolonged dry spell. Rainfall amounts swell from a meager 1mm (0.04") in January to a hefty 140mm (5.51") in August followed by a steep descent to zero in December. Rainfall days follow a similar trajectory, increasing from mere 0.8 days in January to a peak of 25.1 days in August before descending to almost nil by December.

Biro's humidity levels, too, oscillate remarkably throughout the year, ranging from 22% in January to a high of 87% in August. Visibility levels are affected by these humidity fluctuations and range from a low of 7 km between July and September to a high of 10 km from January to April and November to December. The city experiences varying daylight hours between 11.6 and 12.7 hours with maximum hours observed from May to July. In Biro, the sunshine hours dwindle from 10 hours in January to a minimum of 6.1 hours in August.

The best time to visit Biro

Considering the amalgamation of weather parameters — temperature, rainfall, and humidity — the best time to visit Biro would be during the dry months from November to February. During this period, the city witnesses lower rainfall, ranging from 0mm (0") to 4mm (0.16"), and fewer days of rainfall. The temperature, too, is comfortably warm, ranging from 32.8°C (91°F) to 36.8°C (98.2°F). Moreover, the humidity level is at its lowest, ensuring a pleasant climate for explorations.

The worst time to visit Biro

The months of July, August, and September could potentially be considered the worst time to visit Biro. These months coincide with the peak of the city's monsoon season, presenting maximum monthly rainfall between 99mm (3.9") and 140mm (5.51"), and an overwhelming number of rainy days. The humidity level also soars, reaching its annual peak. Although the temperature is comparatively lower, the combination of high humidity and heavy rainfall can result in discomfort and potentially hamper travel and outdoor activities.

Spring weather in Biro

The spring season in Biro, spanning March to May, sees a rise in average temperatures, reaching as high as 39.2°C (102.6°F) in March. Rainfall during this period begins to escalate from 15mm (0.59") in March to 64mm (2.52") in May, heralding the onset of the wet season. The rise in humidity accompanying the rainfall makes the weather feel significantly warmer. Although the daylight hours extend slightly, the sunshine hours begin to diminish, indicating the progressing monsoon.

Summer weather in Biro

Summers in Biro, from June to August, belong to the wettest period of the year with rainfall totals soaring up to 140mm (5.51") in August. The number of rainy days also peaks during this period. The temperatures, on the other hand, descend to their annual lows, averaging from 32.8°C (91°F) to 28.4°C (83.1°F). Humidity levels rise significantly, reaching their highest point of the year. Reduced sunshine hours and limited visibility dominate these months, owing to the heavy monsoon cloud cover.

Autumn weather in Biro

Autumn marks the transition from the wet to the dry season in Biro. From September to November, rainfall figures nose-dive from 100mm (3.94") to a scanty 2mm (0.08"). Temperature averages climb gradually during these months from lows of 29.4°C (84.9°F) to highs of 35°C (95°F). Humidity levels retreat from their peak, while daylight and sunshine hours start to increase, proclaiming the decline of the monsoon.

Winter weather in Biro

Winter in Biro, from December to February, comes as a respite from the high humidity and rainfall of the preceding months. This period is characterized by near-zero rainfall and reduced number of rainy days. Temperatures average between a comfortable 32.8°C (91°F) and 36.8°C (98.2°F), and humidity registers its annual low. The weather remains mostly clear with high visibility and ample sunshine, offering a delightful time for travelers.

Weather in January

Compared to the following month, the weather in Biro, Benin stays cooler in January, with a relatively low humidity level signaling the dry season. In this period, we expect a vast amount of sunshine and bright, clear days. Although there may be occasional light rain, rainfall amounts are low—less than 1mm (0.04") recorded for the month—reflecting the dryness of the season. Weather in January »

Weather in February

In February, a noticeable increase in temperature is expected, creating a warmer climate than January. Humidity also starts to rise slightly, making the air less dry. The cloud cover grows, thereby taking a little edge off the sunlight. Weather in February »

Weather in March

March weather in Biro, Benin can be characterized by a further increase in temperature and humidity from the previous month. Starting from this month until June, rain starts to fall more frequently, heralding the wet season. With a moderate UV index, the intensity of sunlight remains high. Weather in March »

Weather in April

April features a more pronounced difference from the dry season, as both temperature and humidity levels continue to rise. The increase in cloud% from the previous month indicates that the sky is less clear and the sunshine less bright. Weather in April »

Weather in May

The wet season continues in May as the humidity and rainfall peak for the first half of the year. Changes from April are seen in the slight decrease in temperature and the cloud% increase. It creates a cooler climate than the previous month. Weather in May »

Weather in June

June signifies the midpoint in the wet season with Biro, Benin experiencing a drop in the temperature from May. The drop in temperature is mirrored in the decrease of daylight hours and the amount of sunshine. At this point, the wet season is fully underway with an increase in the monthly rainfall average from previous months. Weather in June »

Weather in July

July is typically the month with the highest rainfall in Biro, Benin, as the average record for the period hits 99mm (3.9"). When compared to June, it shows the rainfall season is at its peak. The cloud cover during this month is considerably dense, reducing visibility and sunlight hours. Weather in July »

Weather in August

August retains much of the weather patterns observed during July although the downpours become more frequent. A further reduction in temperature and wind speed marks the last of the cooler periods. The drop in wind speed, coupled with the dense cloud cover, obscures the sun for the majority of the day. Weather in August »

Weather in September

September signals a shift towards the end of the rainy season, as rainfall decreases distinctly from August. Consequently, the cloud cover starts to disperse, increasing daylight hours and visibility when compared to the previous month. Weather in September »

Weather in October

In October, the weather in Biro, Benin experiences a drastic decrease in rainfall and cloud cover compared to the past months. This brings about increased sunshine hours as the dry season takes over. With humidity dropping below 80% for the first time since April, meteorological conditions are less damp. Weather in October »

Weather in November

November is one of Biro, Benin's driest months, as rainfall falls steeply to just 2mm (0.08"). Considerable increases in Sunshine hours are visible from October levels, resuming the dry season's bright, sunny days. In contrast, there is a drop in humidity levels, resulting in a less wet atmosphere. Weather in November »

Weather in December

December in Biro, Benin experiences extremely dry conditions with no rainfall recorded for the month. This is accompanied by maximum sunshine hours and a significant decrease in cloud cover as the dry season peaks. There is also a noticeable drop in temperature from November, leading to cooler weather conditions. Weather in December »