Lamu Climate

Last updated: January 18, 2025

Lamu, Kenya, exhibits a tropical climate characterized by its distinct Koppen-Geiger climate class of "As," marked by consistently warm temperatures throughout the year. The region experiences a minimum temperature of 22°C (73°F) in July, rising to an average of 27°C (80°F). March records the highest temperatures, peaking at 33°C (92°F). This warm and humid climate plays a crucial role in shaping the local ecosystems and influences the lifestyle of the residents in this coastal town.

Lamu temperature by month

In Lamu, Kenya, temperature patterns prominently reflect a warm tropical climate with subtle seasonal variations. The year begins with consistently mild conditions in January and February, where minimum temperatures hover around 23°C (74°F), gradually increasing to a peak in March and April, with maximums reaching 33°C (92°F). This warmth persists throughout the early months, culminating in unchanging highs until May when a slight dip in maximum temperatures occurs. The arrival of June marks a transition to cooler evenings, with average temperatures dropping to 26°C (79°F) and minimums reaching 23°C (73°F). The coolest months are July and August, where temperatures stabilize around 22°C (73°F) at night, with daily highs remaining modest. The temperature gradually rises again from September to December, closing the year with mid-range averages and peaks aligning with 32°C (90°F), highlighting the cyclical nature of Lamu's warm climate.

Monthly Temperatures in Lamu, Kenya

The chart illustrates Lamu's temperature patterns throughout the year, with values aggregated from various locations across the region. It highlights seasonal variations and temperature changes across the months.
JanFebMarAprMayJunJulAugSepOctNovDec818183828079787778808182
Data source: Lamu temperature data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

Witu experiences a minimum temperature of 22°C (73°F) in July and a maximum of 33°C (92°F) in March, showcasing its warm climate throughout the year. Similarly, Lamu has a slightly higher minimum of 23°C (73°F) in July and a maximum of 31°C (88°F) in March. For more detailed temperature information, you can explore the monthly temperatures in Witu here and in Lamu here.

Precipitation Patterns in Lamu

Lamu, Kenya, experiences a distinct precipitation pattern that reflects its tropical climate, with a marked variation across the months. The year opens with relatively low rainfall, accumulating only 15 mm (0.6 in) in January and slightly less in February at 13 mm (0.5 in). As March approaches, rain increases to 39 mm (1.5 in), signaling the onset of the rainy season. April marks a dramatic shift, with precipitation soaring to 160 mm (6.3 in) and an average of 24 rainy days, laying the foundation for the peak wet period in May, which sees an astonishing 358 mm (14.1 in) of rain over 28 days, making it the wettest month of the year.

Following this intense rainfall in May, June experiences a significant decrease to 106 mm (4.2 in), indicating the tail end of the heaviest rains. Despite the reduction, notable precipitation continues throughout the subsequent months, with July and August recording 73 mm (2.9 in) and 60 mm (2.4 in), respectively, accompanied by consistent rainy days. The fall months bring additional rainfall, with October and November receiving 114 mm (4.5 in) and 101 mm (4.0 in), respectively, while December rounds out the year with 62 mm (2.4 in). This cyclical pattern highlights Lamu's reliance on the monsoon seasons, crucial for the local ecosystems and agriculture.

Monthly Average Precipitation in Lamu, Kenya

The average monthly precipitation in Lamu, providing insights into seasonal rainfall patterns and the region's precipitation trends throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec15143916035810673606811410162
Data source: Lamu precipitation data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.
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Sunshine Duration in Lamu

In Lamu, Kenya, the sunshine duration exhibits distinct seasonal trends, with the peak hours occurring in the early months of the year. January starts the year with 290 hours of sunshine, but this increases steadily through February, reaching 323 hours. March marks the zenith, with 354 hours, setting the tone for a sun-rich experience before the onset of the rainy season. Interestingly, April, which typically features heavy rainfall, maintains a commendable 328 hours of sunshine, demonstrating that Lamu still enjoys significant light during its wettest month.

As the year progresses, sunshine hours gradually stabilize around the 320 to 350-hour range from June to December. While June records 327 hours, July and August see a resurgence of sunlight, showcasing 344 and 351 hours, respectively. Even with the transition into the rainy season, the months of September through November maintain a healthy dose of sunlight, averaging around 341 hours. December culminates the year with 355 hours, offering bright days amidst the festive season. This overall pattern emphasizes Lamu's ability to provide ample sunshine year-round, particularly during the driest and sunniest months, supporting both local agriculture and the tourism industry.

Monthly Sunshine in Lamu, Kenya

Monthly sunshine duration represents the total hours of direct sunlight Lamu receives each month, excluding periods when the sun is obscured by clouds or other obstructions.
JanFebMarAprMayJunJulAugSepOctNovDec290h323h354h328h329h327h344h351h341h351h341h355h
Data source: Lamu sunshine duration data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

Lamu UV Index Trends

The UV Index in Lamu, Kenya, consistently indicates extreme levels of solar radiation throughout the year, emphasizing the need for protective measures against sun exposure. January and February register a UV Index of 14, classified as extreme, with a burn time of just 10 minutes. March and April see an increase to 15, reinforcing the intensity of midday sun as it peaks during these months. Even with a slight reduction in May, where the index drops to 13, the potential for skin damage remains high, compelling residents and visitors to prioritize sun protection.

As the year progresses, the UV Index remains predominantly in the extreme category, with June and July reporting 11, yet still requiring vigilance due to the rapid onset of sunburn within 10 minutes of exposure. August marks a slight uptick to 12, followed by a return to 13 from September to December. Notably, despite variations in the UV Index, the persistent extreme levels throughout the year underscore a critical awareness for those in Lamu; adequate sun protection is essential for health and safety in this sun-soaked landscape.

Monthly Maximum UV Index for Lamu, Kenya

The monthly maximum UV Index (UVI) represents the highest UV radiation level recorded each month in Lamu. It measures the strength of ultraviolet radiation from the sun and helps assess the risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec141415151311111213131213
Data source: Lamu UV Index data aggregated from multiple regional locations, generated using Copernicus Climate Change Service information.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

Daylight Hours in Lamu

In Lamu, Kenya, daylight duration displays a remarkable consistency throughout the year, typically averaging around 12 hours. From January to April, residents enjoy long days that stretch to a full 12 hours, providing ample natural light for various activities. However, during the months of May through July, daylight slightly decreases to 11 hours, aligning with the onset of the rainy season. This modest reduction still offers a considerable amount of light, facilitating both agricultural practices and daily life amidst changing weather conditions.

As the year transitions towards the end of winter, daylight returns to its previous duration of 12 hours starting in August and continuing through December. This stability in daylight hours highlights Lamu's equatorial position, where variations are minimal compared to regions further from the equator. The consistent light exposure fosters a dynamic environment that benefits tourism, agriculture, and outdoor activities throughout the year, as both locals and visitors can rely on a predictable daylight schedule.

Average Monthly Daylight Hours in Lamu, Kenya

This chart shows the total daylight hours Lamu receives each month, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec733h730h726h722h719h718h719h721h724h728h732h734h
Data source: Lamu daylight hours, calculated based on aggregated data for various regional locations, determined by the times between sunrise and sunset.

Climate Highlights of Lamu's Popular Destinations

Lamu, Kenya, enjoys a tropical climate with warm temperatures year-round, averaging between 25°C (77°F) and 28°C (82°F). The hottest months are typically March and April, reaching maximums of 31°C (88°F). Rainfall is concentrated between April and May, with May experiencing the highest precipitation at 365 mm (14.4 in). Despite the wet season, Lamu benefits from considerable sunshine hours, especially in March and December, which boast around 355 hours. For more detailed information, visit Lamu climate.

Witu, Kenya enjoys a tropical climate characterized by warm temperatures and significant rainfall. Temperatures range from a minimum of 22°C (73°F) in July and August to a maximum of 33°C (91°F) in February and March, with an average of around 28°C (82°F) throughout the year. The wettest months are April and May, receiving 175 mm and 351 mm of precipitation, respectively, while January and February see the least rain, around 19 mm and 22 mm. Witu also benefits from abundant sunshine, peaking at 353 hours in March and maintaining over 300 hours per month for most of the year. For more details, visit Witu climate.

Conclusion

In conclusion, Lamu, Kenya, presents a unique climatic profile characterized by its consistently warm temperatures, distinctive wet and dry seasons, and extreme UV exposure. With an average of 12 hours of daylight throughout much of the year, the region benefits from ample sunlight that supports both local agriculture and vibrant tourism. However, the pronounced wet season, marked by significant rainfall and fluctuating sunshine hours, plays a key role in shaping the local ecosystem and lifestyle. Recognizing the extreme UV Index levels is crucial for residents and visitors alike, emphasizing the importance of sun protection. Overall, Lamu's climate and daylight patterns highlight the natural beauty and challenges of this tropical paradise, making it an intriguing destination for exploration and sustainable living.

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