Guanajuato, nestled in central Mexico at over 2,000 metres elevation, enjoys a mild, spring-like climate year-round. Winters are cool and dry, while summers are warm and marked by a distinct rainy season. With abundant sunshine, moderate humidity, and only mild seasonal shifts, Guanajuato is a comfortable destination for cultural exploration in any season.
The best times to travel section shows how the months compare for a visit, so you can find the time of year that fits what you want to do.
Background colours of the months:
The colour shows the typical temperature: yellow (hot), green (mild) and blue (cold). How strong the colour is shows the travel season: full colour means high season, soft colour means shoulder season and soft-striped means off season.
Weather symbols:
Each month has one symbol showing what the weather is typically like, such as hot and sunny, freezing or a rainy or snowy season. Use them to quickly spot months that match the weather you want, or to avoid the ones that don't.
Crowdedness:
The people icon shows how busy the place usually is. The more people, the more crowded it gets.
Additional notes:
The grey info boxes point out special things worth knowing, like recurring weather issues or seasonal events.
Guanajuato’s climate is classified as mid-latitude steppe, shaped by its high elevation and central Mexican location. Average annual temperatures hover around 18°C, with daytime highs ranging from 19°C in January to 28–31°C in May, the warmest month. Nights can be cool, especially in winter, when lows drop to 7–8°C. Frost and snow are extremely rare. The city enjoys a mild, almost perpetual spring, with only moderate seasonal variation.
The rainy season arrives from June to September, bringing frequent afternoon showers or thunderstorms and transforming the landscape into lush green. July is the wettest month, with up to 170–220 mm of rain and about 12–22 rainy days. Outside the rainy season, especially from October to May, the weather is dry, sunny, and crisp, with December and January being the driest months (as little as 7–10 mm of rain). Humidity averages 50–60%, rising in summer, but the altitude keeps the air fresh. Guanajuato enjoys 7–11 hours of sunshine daily, with the most sun in spring and early summer. Winds are generally light, averaging 2–4 km/h, and rarely disruptive. The city receives about 700–800 mm of rain annually and is known for its pleasant, walkable climate year-round.
| Average climate data for Guanajuato, Mexico | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Year |
| Average maximum temperature (°C) | 20 | 22 | 25 | 27 | 28 | 26 | 24 | 24 | 23 | 22 | 21 | 20 | 28 |
| Average minimum temperature (°C) | 7 | 8 | 10 | 12 | 14 | 14 | 13 | 13 | 12 | 10 | 9 | 8 | 7 |
| Average precipitation (mm) | 3 | 12 | 15 | 10 | 30 | 80 | 86 | 69 | 62 | 37 | 14 | 4 | 423 |
| Average rainfall days (days) | 3 | 4 | 6 | 6 | 11 | 15 | 20 | 17 | 16 | 10 | 5 | 2 | 116 |
| Average relative humidity (%) | 54 | 49 | 44 | 35 | 44 | 62 | 73 | 74 | 76 | 71 | 66 | 57 | 59 |
| Average wind speed (km/h) | 10 | 10 | 10 | 11 | 10 | 10 | 9 | 10 | 10 | 11 | 9 | 9 | 10 |
| Average daily daylight hours (h) | 11 | 11 | 12 | 12 | 13 | 13 | 13 | 12 | 12 | 11 | 11 | 10 | 12 |
| Average daily sunshine hours (h) | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Average cloud coverage (%) | 13 | 13 | 12 | 11 | 14 | 24 | 35 | 32 | 34 | 24 | 18 | 11 | 20 |
| Average UV index | 4 | 5 | 5 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 5 |
The best time to visit Guanajuato is from October to May, during the dry season. Expect mild temperatures (20–28°C), abundant sunshine, and little rain – ideal for exploring the city’s colourful streets, festivals, and outdoor attractions. Spring and autumn are especially pleasant, with vibrant events and comfortable weather for sightseeing.
The least favourable time is from June to September, when Guanajuato experiences its rainy season. Frequent afternoon showers and thunderstorms can disrupt outdoor plans, though mornings remain sunny and the city’s scenery is lush and green. This is still a good time for those who enjoy quieter travel and don’t mind occasional rain.
Guanajuato has a mild, spring-like climate with cool, dry winters (19–23°C by day, 7–9°C at night) and warm, rainy summers (25–28°C). The city’s high elevation keeps temperatures comfortable and humidity moderate.
The best time to visit is from October to May, when the weather is dry, sunny, and mild. These months are perfect for sightseeing, festivals, and outdoor activities with little risk of rain.
Rain is concentrated in the summer months (June–September), with July being the wettest. The rest of the year is mostly dry, especially from November to May, when rain is rare and days are sunny.
Winters are cool but not freezing, with daytime highs of 19–23°C and nighttime lows of 7–9°C. Frost is rare, and snow is almost unknown, making it a comfortable destination year-round.
Guanajuato enjoys abundant sunshine, with 7–11 hours of sun daily depending on the season. Spring and early summer are the sunniest, while summer afternoons may be cloudier due to rain.
Humidity is moderate, averaging 50–60% year-round. It rises in the rainy season but is balanced by the city’s altitude, which keeps the air fresh and comfortable for most visitors.
Pack layers for temperature swings, a jumper or jacket for cool evenings, and a light rain jacket for summer. Comfortable shoes are essential for walking the city’s hills and cobbled streets.
The warmest month, with the highest average maximum temperature, is May (28.3 °C). The month with the lowest average maximum temperature is January (19.7 °C). Overall, the average maximum temperature over the whole year is 23.7 °C.
The month with the highest average minimum temperature is June (14.3 °C). The coldest month, with the lowest average minimum temperature, is January (7 °C). Overall, the average minimum temperature over the whole year is 10.9 °C.
The wettest month, with the highest amount of precipitation, is July (86 mm). The driest month, with the least amount of precipitation, is January (3 mm). Over the whole year there are 422.7 mm of rainfall on average.
The month with the most days of rain is July (19.7 days). The month with the fewest days of rain is December (1.7 days). Over the whole year there are 115.9 days of rain on average.
The month with the highest average relative humidity is September (76 %). The month with the lowest average relative humidity is April (34.8 %). The overall average relative humidity over the whole year is 58.8 %.
The windiest month, with the highest average wind speed, is April (10.9 km/h). The calmest month, with the lowest average wind speed, is December (9.2 km/h). The overall average wind speed over the whole year is 10 km/h.
The month with the cloudiest skies, so the highest cloud coverage, is July (35 %). The month with the clearest skies, so the lowest cloud coverage, is December (10.9 %). Over the whole year there is an average cloud coverage of 20.2 %.
The months with the longest days, so the most daylight, are June and July (Average daylight: 13 h). The month with the shortest days, so the least daylight, is December (Average daylight: 10.1 h). Over the whole year there are 11.8 h of daylight per day on average.
The month with the most sunshine per day is March (Average sunshine: 9.2 h). The month with the least sunshine per day is July (Average sunshine: 8.9 h). Over the whole year there are 9.1 h of sunlight per day on average.
The months with the highest average UV index are April and May (UV index: 6). The months with the lowest average UV index are January, November and December (UV index: 4). Over the whole year the average UV index is 4.9.
