Weather in Lima in July

Prime time. July is about as good as Lima gets. Highs average 28.4 °C, lows 19.7 °C, and rain falls on 0 days — nothing in the month is working against you.

Lima barely has seasons. July scores 94 out of 100 against a best of 94 in July — a gap small enough that the month you choose matters far less here than the week you choose.

Rain is not a factor worth planning around this month. Pack for 28.4 °C days and 19.7 °C nights; the spread matters more here than any single number.

What the averages hide

The averages here are honest — no hidden extremes worth planning around. Across the twenty years measured, the hottest July day reached 31.1 °C and the coldest night fell to 17.5 °C.

July is dependably dry, and that reliability is the point: across the twenty years measured, the wettest July on record still only managed 3 mm, and the driest managed 0 mm. There is no meaningful variability to plan around, which makes this one of the few months anywhere that you can build a fixed outdoor itinerary against without a fallback. The wettest single day in twenty years of Julys brought 2 mm. Rain simply is not the variable that decides this trip — heat, crowds and cost are.

Wind is light at 9.4 km/h, so the temperature on the page is close to the temperature on your skin, and humidity is unremarkable at 64%.

How July sits in the year

Temperatures hold steady either side: 28.9 °C in June, 28.4 here, 28.6 in August. Nothing about the timing within the month matters much.

Daylight in July

Lima sits close enough to the equator that daylight barely moves all year — 11.5 hours in July, against a range of just 1.4 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 17.4 °C in July — cold — a quick dip rather than a swim, and a wetsuit if you are in for longer. The sea peaks at 22.7 °C in February and bottoms out at 16.6 °C — water lags the air by a month or two, which is why the best swimming often comes after the best weather.

How busy it gets

Peak season. Expect the highest prices of the year and to be booking well ahead. If the dates are flexible, May is the trade worth considering — 6 points weaker on weather, and materially quieter.

Crowd levels are estimated from climate desirability and school-holiday calendars, not from visitor numbers.

July in Lima versus nearby

If Lima is one option among several, the nearby comparison is worth making. Trujillo is the weaker option in July — 9 °C warmer, 1 day more rain. Cusco is close enough to be a coin toss — 11.1 °C cooler, 2 days more rain.

So: July is the answer for Lima. If it is booked out or priced out, August is the next best thing at 1 points behind, and March is the month to keep off the shortlist.

Every month in Lima

See all twelve months in Lima, or where else to go in July.