You’ll want to grab an umbrella before heading out in Belém today, as a light, patchy rain is likely to drift through at some point. The air feels thick and sticky, with humidity sitting around 87 percent, making even a short walk feel a bit clammy. Temperatures will climb to about 27 degrees this afternoon, but the constant moisture in the air keeps it from feeling refreshing.

Overnight, lows drop to around 18 degrees, though the humidity remains high enough that you won’t need a heavy jacket. A steady breeze from the east, blowing at roughly 21 kilometers per hour, offers just a hint of relief from the mugginess. Despite the overcast look, the sun’s strength is still considerable, with the UV index reaching above 8, so sunscreen is a smart move if you’re out for more than a few minutes.

Rainfall is expected to be light, only about half a millimeter, so it’s more of a nuisance than a washout, but the wind could push those sprinkles around unpredictably. You might find the morning starts off drier, with the chance of showers picking up as the day wears on. Plan for a stroll or errands early, when the breeze feels fresher and the air is slightly cooler.

Keep a light layer handy for the evening, when temperatures settle into the low 20s and the humidity makes the air feel heavier again. If you’re heading to the waterfront or an outdoor market, the wind will be noticeable but not strong enough to ruin the outing. Just don’t forget that umbrella, it’ll come in handy before the day is done.