Monterrey Mexico weather by month: heat, rain, fronts, when to go

Q: Does it snow in Monterrey?

Once every few years. Snow fell on 8 December 2017 and 24 December 2004; sleet on 14 February 2021 and in January 2025 on the higher zones iABC Noticias, snow and sleet in Monterrey, 2025-01-21.. The big one, 9 January 1967, left 30 to 60 cm. No snow boots needed.

Q: Is Monterrey humid or dry?

Semi-arid on paper (667 mm a year, 63 rainy days iSMN (Conagua), climate normals 1991-2020, Monterrey (Obs) station.), but Gulf air makes summer sticky: August has about 20 muggy days iWeather Spark, Monterrey, 1980-2016 data., what locals call bochorno. December to March is genuinely dry.

Q: Do student rooms have air conditioning and heating?

Check the listing for a minisplit (wall air-conditioning unit): it is what makes June to September livable. Heating is almost never installed; houses are tiled and open-plan, and December mornings feel colder indoors than out iExpat Exchange, what to pack when moving to Monterrey.. A plug-in heater from around MXN$629 iTelediario, calefactores baratos en Monterrey. fixes that.

🌡️ Monterrey weather month by month

Monterrey has a hot semi-arid climate (Köppen BSh) at about 540 m, on the dry side of the Sierra Madre Oriental . Average afternoons run from 22 °C in December to 36 °C in August, and the 667 mm of yearly rain fall mostly between May and October .

Monterrey, official averages by month

22°72°

10°50°

Jan

24°75°

12°54°

Feb

28°82°

15°59°

Mar

31°88°

18°65°

Apr

34°92°

21°70°

May

36°96°

23°74°

Jun

36°96°

23°74°

Jul

36°97°

24°74°

Aug

33°91°

22°71°

200

Sep

29°84°

19°65°

Oct

25°76°

14°57°

Nov

22°71°

11°51°

Dec

SMN (Conagua), Mexico's national weather service, climate normals 1991-2020, Monterrey (Obs) station. Tags: 🔥 hottest months, 🌧️ wettest, 🧥 cold-front months, ✅ the good weeks.

Read it as four seasons. December to February: dry, sunny, fresh, a cold front every few days. March to May: the ramp, 28 °C in March, 34 °C in May, first storms and first heat waves. June to August: the furnace. September to November: wet at first, then the finest weeks of the year.

Month by month

🧥 January

22 / 10 °C, four rainy days . Sunny, a cold front every few days, record low -7 °C. Dust season begins.

🧥 February

24 / 12 °C . Spring semester starts. The day before a front is often 30 °C, then it drops 15 degrees in hours .

✅ March

28 / 15 °C . Best hiking month, last one before the heat. Texas dust days (five stations in the red on 19-20 March 2025 ) and the start of wildfire season.

April

31 / 18 °C . Summer in practice. First spring storms, sometimes with hail (south of the city, 15 April 2026 ). Nights still pleasant.

May

34 / 21 °C, first real rains, 53 mm . First heat waves: 13-17 May 2025 ran 40 to 44 °C . The CFE summer electricity tariff is on.

🔥 June

36 / 23 °C . The observatory of Conagua, the national water agency, logged 44.8 °C on 21 June 2023 . Hurricane season opens on the 1st.

🔥 July

36 / 23 °C . The canícula, the driest and hottest forty days, starts around 15 July . Alex (2010) and Hanna (2020) were July storms.

🔥 August

Hottest month: 36 / 24 °C, 259 hours of sun , about 20 muggy days . Fall-semester students land on the 1st. The 2026 peak was 40 °C on the 22nd .

🌧️ September

33 / 22 °C and 200 mm, nine rainy days . Peak hurricane season. First cold front around the 20th (22-23 September in 2026 ).

✅ October

29 / 19 °C, still 64 mm . Storms can still be nasty (three deaths on 16-17 October 2024 ). From mid-month, the best weeks of the year.

✅ November

25 / 14 °C, 30 mm , clear skies. The month to pick if you can pick one. Summer tariff over, heaters in the shops.

🧥 December

22 / 11 °C, driest month, 22 mm . Sunset 17:56 on the 21st . Snow on 8 December 2017 and 24 December 2004 . Fall semester ends around the 3rd.

📅 Best time to visit Monterrey, or to move in

Late October to November wins: 25 to 29 °C afternoons, dry, clear, the trails open. March is the runner-up, 28 °C and the last cool nights, and the right season for the desert weekend trips. April is already 31 °C on an average afternoon; June to August is for people who have to be here. December to February works if you accept the fronts.

Exchange students do not pick, the calendar does: Tec's fall semester lands you on 1 August (classes 9 August to 3 December) and the spring one on 31 January (classes 8 February to 11 June) . UDEM and UANL run on similar weeks. What each first week looks like:

Feature	Furnace Land on 1 August (fall semester)	Front season Land on 31 January (spring semester)
Average high / low that week	36 / 24 °C	24 / 12 °C
First week feels like	Canícula: 40 °C afternoons possible, muggy nights, UV extreme at 13:00	T-shirt at noon, jacket at night; a norte can drop it to 12 °C in hours
Buy first	Big water bottle, SPF 50, a fan if the room has no air conditioning	A cheap heater, a blanket, a windbreaker
Rain risk	Hurricane season, September peak ahead	Low, about four rain days a month
Best for	Getting the heat over with, then the best autumn weeks	A comfortable start, then a ramp to summer by April

Furnace Land on 1 August (fall semester)

Average high / low that week: 36 / 24 °C
First week feels like: Canícula: 40 °C afternoons possible, muggy nights, UV extreme at 13:00
Buy first: Big water bottle, SPF 50, a fan if the room has no air conditioning
Rain risk: Hurricane season, September peak ahead
Best for: Getting the heat over with, then the best autumn weeks

Front season Land on 31 January (spring semester)

Average high / low that week: 24 / 12 °C
First week feels like: T-shirt at noon, jacket at night; a norte can drop it to 12 °C in hours
Buy first: A cheap heater, a blanket, a windbreaker
Rain risk: Low, about four rain days a month
Best for: A comfortable start, then a ramp to summer by April

Averages from the SMN 1991-2020 normals for the arrival weeks; the rest is what the first week looks like in practice.

The room matters more than the suitcase. A minisplit in the bedroom and a landlord who answers the electricity question (next section) make August survivable; a blanket and a plug-in heater fix February. The rooms near Tec, UDEM and in San Pedro list what each one has, the guide to living in Monterrey covers the rest of the arrival, and the other Monterrey guides take it from there.

What to pack, whatever the month

One real jacket, even for August

January mornings sit near 10 °C, a norte can take the afternoon from 30 to 12 °C, and the flat has no heating.

A big refillable bottle and SPF 50

The UV index hits 11+ between 13:00 and 14:00 in summer.

Light, loose clothes for four hot months

Cotton and linen. August is muggy about twenty days out of thirty.

A heater or a fan, bought here

From around MXN$629 in any hardware store. Do not fly one in.

Protección Civil Nuevo León followed before you land

Their feed is the difference between a wet afternoon and a stranded car.

🔥 How hot does it get in Monterrey?

The hot season lasts 4.3 months, 2 May to 11 September, with daily highs above 32 °C . The Conagua observatory has recorded 44.8 °C on 21 June 2023 . The canícula, the forty driest and hottest days, starts around 15 July . Locals call the whole thing the calorón.

It is dangerous, not just unpleasant: Nuevo León counted 438 heat cases and 14 deaths in 2024 , the UV index reaches 11+ between 13:00 and 14:00 , and in June 2023 the state cut school days to two hours and closed the school year a month early .

Living with it: walk before 10:00 or after 19:00 (the twenty-minute walk to campus is a July swim), move the workout to the air-conditioned studios around Tec de Monterrey and San Pedro, spend afternoons in the museums, and for real air go up: the Chipinque summit stands at 2,229 m, 1,700 m above the city , twenty minutes from San Pedro (the free things to do guide has the way in). Budget the summer electricity line with the student budget guide.

🌧️ When does it rain in Monterrey? September, storms and floods

667 mm a year on 63 rainy days, and September alone brings 200 mm . The rest spreads thinly from May to October; December to March is nearly dry. Rain comes as a chubasco, a short violent downpour that dumps a month of water in an hour, not as a grey week.

The big floods are hurricane remnants from the Gulf. Alex, 1-2 July 2010: up to 700 mm in 60 hours, the Santa Catarina river at 2,500 m³/s, 15 deaths in the state . Hanna, 26 July 2020: 550 to 600 mm in parts of the metro . Alberto, 19-20 June 2024: emergency declared in all 51 municipalities . Even a plain cold front can kill: three people in the rains of 16-17 October 2024 .

The upside is the water the storms leave: in 2022 the dams fell below 5 % and the city lived on six hours of running water a day ; in September 2026 they sit around 80 % . Spring adds hail, as on 26 May 2025 north of the city . Two sources worth following:

Protección Civil Nuevo León on X

Official Spanish

Rain reports by municipality, road closures, hail, cold-front timing. Faster than the news sites that quote it.

Servicio Meteorológico Nacional

Official Free

Conagua's forecast page: cold-front bulletins, hurricane warnings, heat-wave notices, and the normals used on this page.

Open

🧥 How cold does it get in Monterrey? Cold fronts and the norte

Winter is a sequence of frentes fríos, cold fronts, not steady cold. They run from September to May: about 50 in 2025-2026 and 56 forecast for 2026-2027 . Each arrives with the norte, a dry north wind gusting 40 to 70 km/h . The day before is often the hottest of the week, 30 °C, then the thermometer falls to 12 °C or lower in a few hours .

Between fronts, January is 22 °C in the afternoon and 10 °C at dawn . The extremes are real: record low -7.5 °C, and the February 2021 winter storm took the metro to about -5 °C, cut the power and killed four people ; UDEM, the Universidad de Monterrey, cancelled the day. The surprise is indoors: houses are tiled, open-plan and unheated, so a 10 °C morning feels colder in the bedroom than on the street ; an electric heater from around MXN$629 fixes it. Front season is also dust season: from January to March the norte carries Texas soil into the valley, and the air-quality guide says what to do on those grey mornings.

Common questions

❄️ Does it snow in Monterrey?

Once every few years. Snow fell on 8 December 2017 and 24 December 2004; sleet on 14 February 2021 and in January 2025 on the higher zones . The big one, 9 January 1967, left 30 to 60 cm. No snow boots needed.

💧 Is Monterrey humid or dry?

Semi-arid on paper (667 mm a year, 63 rainy days ), but Gulf air makes summer sticky: August has about 20 muggy days , what locals call bochorno. December to March is genuinely dry.

🕰️ Does the clock change in Monterrey?

No. Mexico dropped daylight-saving time in 2022; only the border town of Anáhuac still changes . Sunset is at 17:56 on 21 December and 19:36 on 21 June .

☔ What can I do in Monterrey when it rains?

Go indoors: the museums around the Macroplaza, the central square, are a ten-minute walk from each other, and the San Pedro malls were built for this weather. A September storm passes in a couple of hours; a tropical storm can sit on the city for two days. Stay off the underpasses either way.

🌀 Do hurricanes hit Monterrey?

Not as wind, the city is 200 km inland. What arrives is the rain: Alex (July 2010, 15 deaths in the state), Hanna (July 2020) and Alberto (June 2024) all flooded the same streets . Season: 1 June to 30 November. One or two a decade reach the city.

🌬️ Do student rooms have air conditioning and heating?

Check the listing for a minisplit (wall air-conditioning unit): it is what makes June to September livable. Heating is almost never installed; houses are tiled and open-plan, and December mornings feel colder indoors than out . A plug-in heater from around MXN$629 fixes that.

Monterrey Mexico weather by month: heat, rain, fronts, when to go