Climate and monthly weather forecast
Diani Beach, Kenya

Strategically located on the coastal region of Kenya, Diani Beach boasts a tropical wet and dry climate or savanna climate, characterized by a 'summer' dry season. This climate scheme, according to the Köppen climate classification, is labeled as As. The climatic variance that Diani Beach experiences throughout the calender year revolves around a sequence of slightly alternating parameters such as average daytime temperature, sea temperature, rainfall, sunlight duration, and ultraviolet index.

Considering the monthly average daytime high temperature, it oscillates between 28°C (82.4°F) and 33°C (91.4°F), illustrating a remarkably stable upper temperature limit. With regards to the average minimum temperature, the noticeable fluctuation ranges from 20°C (68°F) in July and August to 24°C (75.2°F) in March, April and December. This discloses a somewhat stable weather pattern with mildly cooler nights during the middle of the year.

The amount of rainfall in Diani Beach, differs significantly in different months of the year. Rainfall peaks at 270mm (10.63") in May, followed by a substantial decrease to 76mm (2.99") in July, highlighting the contrast between wet and dry seasons. The city experiences the highest numbers of rainy days in May reaching 19 days, while February and March see the least rainfall with 4 and 6 days respectively.

The average sea temperature persistently hovers between 25°C (77°F) and 29°C (84.2°F) throughout the year, showcasing the consistency of marine weather. The duration of daylight slightly declines from 12.4 hours in December to 11.9 hours from May to July, illuminating the marginal seasonal variation in daylight hours. The city sees a small variation in sunlight hours, spanning from 6 hours in May to 10 hours in February. Lastly, the ultraviolet index, an important gauge of the sun's intensity, stays at a high level of 10 or above across the year.

Taking into consideration weather conditions, the optimal time to visit Diani Beach is from January to March. During these months, temperatures are at their peak, with upper values reaching 32°C (89.6°F) to 33°C (91.4°F), and lower limits stabilizing between 23°C (73.4°F) and 24°C (75.2°F). The rainfall is relatively low with an average of 17mm (0.67") to 68mm (2.68") for this period. The sea temperature also remains comfortably warm, averaging at 28°C (82.4°F) to 29°C (84.2°F), promoting indulgence in water activities. Moreover, the sunshine duration averages at 9 to 10 hours daily, offering ample sunlight for outside pursuits. The UV index, however, sits at its maximum of 12, suggesting the need for substantial sun protection.

Despite the mostly benign weather year-round, the least favorable period to visit Diani Beach would be May, the month with the highest rainfall. The city experiences an average of 270mm (10.63") of rainfall, spread across 19 days. Simultaneously, the sunshine hours hit their lowest point, with an average of just 6 hours daily. The sea temperature remains at 28°C (82.4°F) which might encourage some to partake in water activities. However, heavy rains could affect accessibility to various tourist spots and make outdoor activities less enjoyable.

From March to May, Diani Beach experiences its unique form of 'spring'. In March, temperatures range from 24°C (75.2°F) to 33°C (91.4°F). Rainfall is relatively low at 68mm (2.68"), spread over 8 rainy days. April introduces the wet season with rainfall surging to 181mm (7.13"), accompanied by a drop in average high temperatures to 31°C (87.8°F). May endures the most significant rainfall in the year at 270mm (10.63"), with a further decrease in high temperatures to 30°C (86°F). Sea temperatures remain hospitable, from 28°C (82.4°F) to 29°C (84.2°F), throughout the entire spring span.

The 'summer' season in Diani Beach extends from June through to August. During this span, the city witnesses a considerable reduction in rainfall, with averages of 97mm (3.82"), 76mm (2.99"), and 65mm (2.56") for June, July, and August respectively. The average high temperature hovers around the 28°C (82.4°F) to 29°C (84.2°F) mark, while the lower limit fluctuates between 20°C (68°F) to 21°C (69.8°F). Notably, this season also carries the lowest sea temperature, dropping to 25°C (77°F) in August.

Diani Beach's 'autumn' season falls between September and November. Rainfall levels remain relatively low initially with 63mm (2.48") in September and then rise to 86mm (3.39") and 102mm (4.02") in October and November respectively. Both high and low temperatures start climbing marginally with values ranging between 21°C (69.8°F) to 31°C (87.8°F) in September and then 22°C (71.6°F) to 30°C (86°F) in October and November. The sea temperature gradually increases from 26°C (78.8°F) in September to 28°C (82.4°F) by November.

The 'winter' season at Diani Beach is observed from December to February. It enjoys pleasant climatic conditions with average high temperatures oscillating between 31°C (87.8°F) and 32°C (89.6°F) and low temperatures averaging from 23°C (73.4°F) to 24°C (75.2°F). Rainfall during this quarter is relatively sporadic, with averages varying from 30mm (1.18") to 66mm (2.6") across these months. Diani Beach also experiences the maximum daylight hours in December and the highest sea temperature of 28°C (82.4°F), allowing visitors to enjoy a combination of warmth, sunlight, and aquatic activities.

Starting the year, Diani Beach, Kenya exhibits a mix of cloudy and sun-drenched days. A slight change in temperature from both extremities is noticed from last month. The weather remains delightfully warm, a characteristic of the tropical climate of the region. Weather in January »

As February rolls in, Diani Beach continues to maintain its consistent warm climate. No substantive changes in the temperature or sea temperature occur from the preceding month, but a decrease in rainfall to 17mm (0.67") slightly alters the overall climate. Weather in February »

The Diani Beach Microclimate begins to shift slightly as March approaches. Comparing with February, the rainfall shows a significant increase creating a more humid environment. The wetter surroundings may limit outdoor activities, but do not diminish the charm of the beach. Weather in March »

April at Diani Beach experiences a marked increase in rainfall, recording 181mm (7.13") compared to the preceding month. The rainfall accompanied with relatively consistent temperatures portrays a picture of a typical tropical rainy season. Weather in April »

The weather in May witnesses the highest rainfall throughout the year, making it the wettest month with 270mm (10.63") recorded. This month doesn't see any considerable temperature shifts from the previous month, showing typical tropical weather consistency. Weather in May »

June presents a breather from the high precipitation experienced in May, as Diani Beach records a significant decrease to 97mm (3.82") rainfall. The change in weather pattern from the preceding month allows more opportunities for outdoors. Weather in June »

July sees an onset of cooler weather in Diani Beach but remains comfortably warm none the less. With the decrease in both high and low-temperature values from last month, beach-goers can enjoy milder weather. Despite the change in air temperature, there is a moderate amount of rainfall which further cools the surroundings. Weather in July »

In August, Diani Beach still retains the slightly cooler trend set in July. The beach experiences no temperature deviation from the previous month. Rainfall decreases marginally, contributing to a drier atmosphere. With balanced weather elements, August provides a perfect backdrop for vacationers seeking a mix of sun and rain. The lowest level of Diani Beach's temperatures is noted during July and August, averaging a high-temperature of 28°C (82.4°F). In Diani Beach, in August, during 13 rainfall days, 65mm (2.56") of precipitation is typically accumulated. Weather in August »

The transition into September brings about an increase in temperature, but the climate remains refreshing and inviting. Rainfall remains at a lower level, giving residents and tourists more sunny days to indulge in. The decrease in rain from last month contributes to less humidity, making outdoor activities more pleasant. Weather in September »

Diani Beach starts to warm up more in October. The balanced mix of rainfall and sunshine creates a vibrant weather pattern, resonating with the tropical nature of the locale. A noticeable increase in sea temperature from last month adds to the overall warmth, beckoning beach goers to the sparkling waters. In October, Diani Beach notes an average high-temperature of a tropical 30°C (86°F), hardly different from the preceding month. Weather in October »

November carries on the warm trend from the previous month but with a slight increase in rainfall to 102mm (4.02"). The increase in precipitation compared to last month does not, however, hamper the pleasant temperature range. Weather in November »

As the year wraps up, December brings in a slight decrease of 66mm (2.6") rainfall from the last month. Diani Beach, Kenya continues to be a warm paradise, true to its tropical character. The stable climate and welcoming sea temperature make it an excellent location for end-of-the-year parties and festivities. Weather in December »