Antigua sits at about 1,540 metres, and over 1996-2025 its average daily highs ran between 24 and 27 °C by month in Open-Meteo’s reanalysis data, with average lows between 14 and 17 °C. This page answers a narrower question than a normal forecast: when in the day the rain is forecast. It takes a 7-day forecast for Antigua, splits each day’s rain chance into morning, afternoon and evening, and names the hour with the highest chance, so you can see which part of the day to plan outdoors.
The week, by part of the day
Pulled Sep 24, 2026 at 20:48 Guatemala time from Open-Meteo forecast API.
| Day | High / low | Rain chance 6am–noon | Noon–6pm | 6pm–midnight | Wettest hour | Rain total |
|---|---|---|---|---|---|---|
| Fri Sep 25 | 24°C (75°F) / 16°C (61°F) | 98% | 100% | 85% | noon–1 PM | 7.5 mm |
| Sat Sep 26 | 25°C (77°F) / 15°C (59°F) | 84% | 99% | 89% | 3 PM–4 PM | 14.7 mm |
| Sun Sep 27 | 23°C (73°F) / 16°C (61°F) | 92% | 100% | 81% | noon–1 PM | 2.1 mm |
| Mon Sep 28 | 23°C (73°F) / 14°C (57°F) | 82% | 98% | 68% | 2 PM–3 PM | 7.8 mm |
| Tue Sep 29 | 24°C (75°F) / 16°C (61°F) | 98% | 100% | 82% | noon–1 PM | 6.9 mm |
| Wed Sep 30 | 24°C (75°F) / 14°C (57°F) | 82% | 97% | 87% | 3 PM–4 PM | 17 mm |
Model point 14.5586, -90.7295 (the same Antigua point our national forecast uses); the forecast model downscales to 1,542 m there. A forecast, not a measurement. Temperatures in °C (°F), wind in km/h (mph); hours are Guatemala time.
How to read it. Each rain-chance column is the highest hourly probability in that block of hours, not an average. Open-Meteo defines each hourly figure as the probability of more than 0.1 mm of rain in that hour, drawn from 30 runs of its ensemble models, so 80% in the afternoon column means at least one afternoon hour is forecast at 80%. The wettest hour is the one-hour slot between 6 AM and midnight with the highest chance; when two slots tie, it shows the earlier one. The rain total is the forecast amount for the whole day, midnight to midnight.
Planning around it
- Walking the town, ruins and markets: pick the block with the lowest figure for the day.
- Day trips and hikes from Antigua: check the destination’s own forecast as well. The Acatenango summit forecast is a different place, 2,400 metres higher; Lake Atitlán’s is on Lake Atitlán weather.
- Volcano activity: Fuego’s eruption status, CONRED alerts and ash advisories are on volcano eruption today. A forecast of rain says nothing about ash.
- Whole-trip timing: for which months are wetter, drier, warmer or cooler, use the best time to visit Guatemala, month by month.
Sunrise and sunset for Antigua for the week are on sunrise and sunset times in Guatemala. Getting to Antigua is covered in getting to Antigua, and what to do there in things to do in Antigua.
Where the forecast comes from
The table is built from the Open-Meteo forecast API (its best-match model blend), read once a day by our data pipeline for a fixed point in Antigua. The stamp above the table shows when the forecast was read. If a day’s read fails, the previous file stays in place: the page keeps showing that forecast, drops any days that have already passed when the page is rebuilt, and the stamp turns red once the forecast is more than 26 hours old. Guatemala’s official weather service is INSIVUMEH, which publishes national forecasts and warnings; for official alerts see Guatemala weather alerts.
Frequently Asked Questions
What is the weather in Antigua Guatemala this week?
The table on this page is a 7-day forecast for Antigua from the Open-Meteo forecast service, read once a day. For each day it shows the high and low, the highest chance of rain in the morning (6 AM to noon), afternoon (noon to 6 PM) and evening (6 PM to midnight), the hour with the highest rain chance and the forecast rain total.
Does it rain all day in Antigua in the rainy season?
Look at the three rain-chance columns for the days you are there: they show whether the forecast puts the rain in the morning, the afternoon or the evening. A day with a low morning figure and a high afternoon one is a day to do the walking early. Month-by-month averages are in our best-time-to-visit guide.
When is the rainy season in Antigua?
Our best time to visit Guatemala guide shows each month’s share of the year’s rain for Antigua, computed from 30 years of Open-Meteo reanalysis data. This page is for the week in front of you, not the season.
Is the forecast for the centre of Antigua?
It is for the fixed point 14.5586 N, 90.7295 W, the same point our national forecast uses for Antigua. The forecast model adjusts temperature to its terrain height at that point, which it reports as about 1,540 m. A forecast is a model estimate, not a measurement from a station in the town.
