MEXICO · PUERTO PENASCO · APRIL
Puerto Penasco in April runs a 76.6°F afternoon high and a 62.7°F overnight low, with 0.09 inches of precipitation for the whole month. The Sea of Cortez is the cool part of the picture at 68.9°F. The air figures are 1991-2020 normals, and the sea figure averages 2015-2024.
March runs 72.3°F highs over a 65.0°F sea, and May runs 80.8°F over 75.2°F. April lands in the middle on every measure, so the choice mostly comes down to how warm you want the water.
THE MONTH AT A GLANCE · PUERTO PENASCO IN APRIL
April gives Puerto Penasco a 76.6°F high, almost no rain and a 68.9°F sea: a beach month for anyone happy with cool water.
AVERAGE HIGH 76.6°F · SEA 68.9°F · 0.3 RAIN DAYS · LEVEL 3 ADVISORY FOR SONORA
Go for: dry beach days, cool-water dips at Sandy Beach and Cholla Bay, and sunsets over the Sea of Cortez around 7:04 p.m.
Think twice before: booking without reading the State Department’s Level 3 advisory for Sonora, or if you want bathwater. May’s sea reads 75.2°F.
Climate: Open-Meteo / ECMWF ERA5 (model reanalysis) · Sea: Open-Meteo Marine API · Advisory: U.S. Department of State · full sources at the end
On this page
- Puerto Penasco weather in AprilA 76.6°F high, a 62.7°F low and 0.3 rain days
- Can you swim in Puerto Penasco in April?Sea at 68.9°F, plus Sandy Beach and Cholla Bay
- How busy is Puerto Penasco in April?Sonora’s 3% lodging tax and what we could not verify on prices
- Things to do in Puerto Penasco in AprilTwo swimming beaches on the Sea of Cortez
- Puerto Penasco itinerary for AprilTwo days paced on 13 hours of daylight
- Puerto Penasco in April vs March and MayHighs of 72.3°F, 76.6°F and 80.8°F side by side
- Is April a good time to visit Puerto Penasco?Who it suits, and the Level 3 advisory for Sonora
Most U.S. visitors reach Puerto Penasco by car through the Lukeville-Sonoyta border crossing. Mar de Cortes International Airport went more than five years without scheduled commercial flights, and a new scheduled route resumed service in mid-2026. We found no schedule or fare, so ask the airline directly. More of Mexico is in our destinations guides.
Puerto Penasco weather in April
| Measure | April (1991-2020) |
|---|---|
| Average high | 76.6°F |
| Average low | 62.7°F |
| Day-night swing | 13.9 degrees |
| Precipitation | 0.09 inches |
| Days at 0.10 inch or more | 0.3 |
| Days at 1 inch or more | 0.0 |
| Daylight on April 15 | About 13 h 01 min |
Every figure here is a 1991-2020 normal from ERA5, a model reanalysis published through Open-Meteo, not a thermometer reading. The grid cell sits over Puerto Penasco on the Sonoran shore of the Sea of Cortez. None of the town’s three CONAGUA stations publishes a normals product, and a cell on this coast may soften the desert’s sharp day-night swing, so real afternoons and nights may sit further apart than these numbers. April averages a 76.6°F high, a 62.7°F low and 0.09 inches of precipitation.
An average April records 0.3 days with at least 0.10 inch of rain and 0.0 days with an inch or more. Read that as a month where a wet day is the exception and a day-long washout does not appear in the average. A beach day needs no rainy-day backup.
The gap between the 76.6°F high and the 62.7°F low is 13.9 degrees. Pack a sweatshirt for mornings and evenings, light clothes and sunscreen for the afternoon. If the real swing is wider than the grid cell suggests, the sweatshirt matters even more.
April 15 gives about 13 hours 01 minutes of daylight. The sun rises at 13:03 UTC and sets at 02:04 UTC, which is 6:03 a.m. and 7:04 p.m. in Hermosillo time, the zone Puerto Penasco follows. After 7:04 p.m. the beach is dark, so schedule dinner for after sunset.
Can you swim in Puerto Penasco in April? Sea temperature
The Open-Meteo Marine API puts the sea surface off Puerto Penasco at 68.9°F in April, averaged over 2015-2024. That is a mean of daily maxima, so it runs a shade warmer than a 24-hour mean, and a source that averages the whole day will read a little lower.
At 68.9°F the water sits 7.7 degrees below the April air high. That makes for a brisk dip rather than a long soak. Sandy Beach (Playa Mirador) and Cholla Bay are the two swimming beaches on the Sea of Cortez, and both open onto the same sea.
We found no April wind or swell reading for this coast, so we cannot say how choppy the water runs. Check the local forecast the morning you go, and ask at the beach before swimming.
How busy is Puerto Penasco in April? Crowds and prices
We found no occupancy series and no monthly hotel-rate data for Puerto Penasco, so we place April in no price ranking and call no month cheap or expensive. What the calendar does show is a climb: highs rise from 72.3°F in March to 80.8°F in May, and the sea from 65.0°F to 75.2°F. We also found no verified event or holiday date for April, so we name none.
We could not verify how far ahead April rooms fill, so we give no number of weeks. Ask the property for its April availability, its deposit and its cancellation terms before you pay. Our Travel 101 basics cover booking a beach trip across the border for the first time.
Sonora’s lodging tax is 3% of revenue under Article 122 of the state’s Ley de Hacienda (text published December 26, 2025). We could not verify how a given hotel or rental shows it on the bill, so check whether a quoted rate already includes it.
We found no price data that ties any upgrade to April, so we name no line where paying more changes the month. Money does not change the sea, though. A beachfront room and a room across town share the same 68.9°F water.
Things to do in Puerto Penasco in April
April is a month for time outdoors: a 76.6°F high stays below May’s 80.8°F, rain averages 0.3 days, and daylight lasts 13 hours 01 minutes. Long walks on the sand, an afternoon dip and an evening outside all fit inside those numbers.
Sandy Beach (Playa Mirador) and Cholla Bay are the two swimming beaches to know, both on the Sea of Cortez. Each opens onto water that averages 68.9°F this month, measured as a mean of daily maxima.
The sea is the variable at both beaches: 65.0°F in March, 68.9°F in April and 75.2°F in May, all from the marine API. Mornings start near the 62.7°F low, so save the swimming for the afternoon, when the air reaches 76.6°F.
We could not verify entry fees, parking charges or opening hours at Sandy Beach or Cholla Bay, so we quote none. Confirm locally rather than trusting a number from an old post.
Puerto Penasco itinerary for April
Day one, Sandy Beach. Start after sunrise, when the air sits near its 62.7°F low and a sweatshirt earns its place in the bag. Walk the sand while it is cool, keep the swim for the afternoon high of 76.6°F, and stay until the light goes. Dinner comes after sunset.
Day two, Cholla Bay. Repeat the rhythm at the second beach, cool morning first and water in the afternoon. A wet day is unlikely at 0.3 rain days a month. If a shower or wind turns the day, push the swim later and check the local forecast, since we have no April wind reading.
Puerto Penasco in April vs March and May
| Measure | March | April | May |
|---|---|---|---|
| Average high | 72.3°F | 76.6°F | 80.8°F |
| Average low | 57.8°F | 62.7°F | 68.6°F |
| Precipitation | 0.34 inches | 0.09 inches | 0.03 inches |
| Days at 0.10 inch or more | 1.0 | 0.3 | 0.1 |
| Sea surface (Marine API) | 65.0°F | 68.9°F | 75.2°F |
Air temperatures come from the same ERA5 normals for 1991-2020 in all three months, and the sea figures come from the marine API for 2015-2024. Highs rise 4.3 degrees from March to April and 4.2 degrees from April to May. Lows climb 4.9 degrees, then 5.9. The sea gains 3.9 degrees into April and 6.3 more into May. Rain falls from 0.34 inches to 0.09 to 0.03.
Going a month later buys a 75.2°F sea, 68.6°F nights and 0.1 rain days. Going a month earlier means 65.0°F water, 57.8°F nights and 1.0 rain day. We have no rate data for either month, so we cannot say what the shift does to your bill.
Is April a good time to visit Puerto Penasco?
Yes, if you want dry, mild beach days and can take cool water. With 0.3 rain days, a 76.6°F high and a 68.9°F sea, April suits long walks on the sand, short dips and slow afternoons. No, if the plan is floating in bathwater. Separately, the U.S. Department of State rates the State of Sonora Level 3, Reconsider travel, due to terrorism and crime (reissued May 29, 2026, read September 29, 2026). Read that entry in full before you book.
If warm water decides the trip, choose May: the sea reads 75.2°F, highs reach 80.8°F and rain days fall to 0.1. Nights are milder too, with a 68.6°F low. For other places to go in the same window, browse where to go by month.
April is the one month of the three with a high below May’s 80.8°F and a sea warmer than March’s 65.0°F.
The last word
Book the room with cancellation terms in writing, pack a sweatshirt for the 62.7°F nights, and save the first swim for the afternoon. The town sits at the edge of the Alto Golfo de California y Delta del Rio Colorado Biosphere Reserve, decreed on June 10, 1993 as the critical refuge of the vaquita marina, the world’s most endangered marine mammal.
Sources & data for this guide
- April normals (average high, low, precipitation, rain days), plus March and May neighbors · Open-Meteo / ECMWF ERA5, 1991-2020, grid-cell model reanalysis over Puerto Penasco, not a station reading · checked Sep 30, 2026
- Sea surface temperature, April, March and May · Open-Meteo Marine API, mean of daily maxima, 2015-2024 · checked Sep 30, 2026
- Sunrise, sunset and daylight on April 15 · sunrise-sunset.org, converted to Hermosillo time · checked Sep 30, 2026
- Alto Golfo de California y Delta del Rio Colorado Biosphere Reserve decree (June 10, 1993) · CONANP, conanp.gob.mx · checked Sep 30, 2026
- Mar de Cortes International Airport service status · local press (Codigo Rojo Cajeme, Ahora Noticias Penasco) · checked Sep 30, 2026
- Sonora lodging tax, Article 122 · Congreso del Estado de Sonora, Ley de Hacienda del Estado de Sonora, text published Dec 26, 2025 · checked Sep 30, 2026
- Travel advisory for Sonora, Level 3 · U.S. Department of State, reissued May 29, 2026, travel.state.gov · checked Sep 30, 2026
- We found no occupancy series, room-rate data, April event dates, April wind or swell readings, or beach fees and hours, so we give none. Beach descriptions are common knowledge and editorial.