Weather in Fortaleza in May

Shoulder season. May is shoulder season in Fortaleza — cheaper, quieter, and a genuine gamble. You should expect rain on 22 days of the month, which is more days wet than dry.

May ranks 11 of 12 — near the bottom of Fortaleza's year. August is the month that works, and the swing between the two is 33 points, which is a different holiday rather than a slightly better one.

Rain on 22 of the month's 31 days, 4 of them heavy. At that frequency a wet-weather backup is not a contingency, it is the itinerary — book the indoor things first and treat the clear days as the bonus. Natural fibres and a second shirt for the day. At 83% nothing dries, including you.

What the averages hide

Averages flatten a month, and this one hides a few things: the day barely swings — 2.8 °C between the overnight low and the afternoon high. Across the twenty years measured, the hottest May day reached 31.2 °C and the coldest night fell to 24.1 °C, and the wettest single day dropped 59 mm — roughly 41% of the month's rain in one day.

May is moderately variable: 43 mm in the driest year against 289 mm in the wettest, around an average of 145 mm. Roughly two Mays in three land near that average, and the third does something else entirely.

Wind is light at 15.2 km/h, so the temperature on the page is close to the temperature on your skin, and humidity runs at 83%, high enough to notice on the warm days without dominating them.

How May sits in the year

Temperatures hold steady either side: 28.7 °C in April, 28.9 here, 28.7 in June. Nothing about the timing within the month matters much. Rain is the thing that moves: June brings 5 days less of it, so pushing the dates later buys drier weather.

Daylight in May

Fortaleza sits close enough to the equator that daylight barely moves all year — 11.9 hours in May, against a range of just 0.4 hours across the whole calendar. Sunrise and sunset land at roughly the same time whenever you come.

Sea temperature

The sea sits at about 28.7 °C in May — warm enough that the water offers no relief from the heat. This is the warmest the water gets all year.

How busy it gets

Off season. The genuine off season: cheapest by a distance, with the caveat that some tours and restaurants close entirely.

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

May in Fortaleza versus nearby

If Fortaleza is one option among several, the nearby comparison is worth making. Recife is close enough to be a coin toss — within a degree on temperature, 2 days more rain. Maceió is close enough to be a coin toss — within a degree on temperature, 1 day more rain.

So: May is a compromise. August is 32 points better and is what Fortaleza is actually like at its best — worth moving the trip for if that is possible, and worth adjusting expectations for if it is not.

Every month in Fortaleza

See all twelve months in Fortaleza, or where else to go in May.