Lima has a arid desert climate, classified as BWn in the Köppen system. The warmest month is January with an average high of 26°C, while the coldest month is July with lows dropping to 15°C. The annual temperature range of 11°C indicates a relatively stable climate year-round.
The driest month is October with only 0 rain days and 2mm of precipitation. For travellers, October through to the following month typically offers the best balance of warm temperatures and dry conditions. Average humidity ranges from 82% to 82% throughout the year.
Best Time to Visit Lima
Based on temperature and rainfall data, the best months to visit Lima are January, April, May. These months offer the most comfortable temperatures with relatively low rainfall, ideal for sightseeing and outdoor activities.
In January, Lima experiences average highs of 26°C (79°F) and lows of 20°C (68°F). Expect around 4 rainy days and 11 hours of sunshine per day, with humidity averaging 82%. The 6°C gap between daytime and overnight temperatures is worth planning around: light layers work for most visitors during the day, but an overshirt or cardigan handles the cooler evenings. UV index averages 8, so sun protection is advisable on clear days.
Lima typically sees 4 rainy days in January, with total precipitation of around 14mm. This makes January one of the drier months of the year, and a reliable window for outdoor sightseeing and day trips. Rain showers tend to be brief when they do occur. For context, the driest month in Lima typically sees 4-6 fewer rain days than January.
Pack light layers, a light jacket for evenings, comfortable walking shoes, and sunscreen for Lima in January. Daytime temperatures of 26°C are pleasant, but the evening drop to 20°C means a jacket is essential if you plan to be out after dark. Rain is infrequent with only 4 wet days, so a light rain layer is optional. Comfortable walking shoes are a priority given the amount of ground most visitors cover.
Yes, January is an excellent time to visit Lima. With 11 daily sunshine hours and only 4 rainy days, conditions are ideal for sightseeing and outdoor activities. Temperatures averaging 26°C during the day are comfortable for long walks and outdoor dining. This is peak travel season, so booking accommodation in advance and arriving at popular attractions early in the morning helps avoid the busiest periods.
The average high temperature in Lima in January is 26°C (79°F), and the average low is 20°C (68°F). The mean daily temperature is approximately 23°C (73°F). The day-to-night range of 6°C is moderate, meaning a single light jacket covers most situations. These are 30-year climate normals based on the 1991 to 2020 reference period; individual years will vary, particularly in transitional months like spring and autumn.
The best month to visit Lima is generally September. September offers the most sunshine at 12 hours per day and only 0 rainy days. Average temperatures reach 21°C, making it comfortable for sightseeing, outdoor dining, and exploring the city. If your travel dates are flexible, planning your trip around September gives you the best chance of dry, bright weather.
January is shoulder or low season in Lima, meaning fewer tourists and generally lower prices than peak months. With 11 sunshine hours and 4 rainy days, the weather is less of a draw for mass tourism. This is an advantage for travellers who prefer a quieter, more relaxed experience with shorter queues and easier accommodation availability.
In January, Lima suits a range of activities thanks to mild temperatures around 26°C. With few rainy days, outdoor activities are highly recommended. Top options include exploring historic neighbourhoods, visiting museums and galleries, local food markets, and day trips to surrounding areas. With 11 hours of sunshine, parks and waterfront walks are particularly enjoyable.