Camino Natural del Ebro weather: warnings stage by stage, month by month

Camino Natural del Ebro, Fontibre to Deltebre, in 14 stages. Warnings 2019–2025; updated 27 October 2026.

The Camino Natural del Ebro (GR 99) follows the river from its source at Fontibre, in Cantabria, to the delta at Deltebre. By warnings it's three routes in one: snow and wind at the head of the river, heat and storms in the valley, and wind on the last section, in Tarragona. This is what the official warnings say, stage by stage and month by month.

October

the month with the fewest warnings

1.6 warning days riding the whole route

August

the month with the most warnings

5.2 warning days in 14 stages

warning zones

in 6 provinces

red days on some stage

2019 to 2025

The stages cross warning zones in Cantabria, Burgos, La Rioja, Navarre, Zaragoza and Tarragona. Here we count, for each one, the warning days in the zones it crosses, and add them up month by month.

October and April are the calmest months. July and August are the busiest, for heat and storms; January is busy too, mostly for wind and cold.

Over the last eight years, most red days have come with the summer heat, and some covered the whole route, such as 24 August 2023 or 11, 16 and 17 August 2025. In winter there have also been red days for snow, such as 9 and 10 January 2021.

The Camino Natural del Ebro's warning zones

AEMET doesn't warn by village but by zone. The Camino Natural del Ebro crosses 8 warning zones, each with its own thresholds and warnings: on the same day one section can have a warning and the next none.

Fewer warnings than averageClose to averageMore warnings than average

Average warning days a year in each zone, 2019–2025, against the median of Spain's zones (54 days). Approximate route through the stages. Tap a zone to go to its page.

Riding the whole route, month by month

How many warning days you'd get, on average, riding one stage a day from Fontibre to Deltebre in each month. Tap a month to see it stage by stage.

yelloworangered

4.3Jan 1.8Feb 2.2Mar 1.6Apr 2.4May 4.8Jun 5.2Jul 5.2Aug 2.4Sep 1.6Oct 2.4Nov 3.2Dec

Stage-days with a warning, average 2019–2025, over 14 stages; the colour is the day's highest level in the stage's zones.

Stage by stage, month by month

Share of days with some warning in each stage's zones, 2019–2025. The darker, the more warnings.

Stage	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
1. Fontibre – Reinosa	41	18	19	11	12	29	15	20	14	15	18	22
2. Reinosa – Polientes	34	14	16	9	9	25	14	18	9	11	10	14
3. Polientes – Frías	42	17	19	12	15	30	22	24	13	14	14	24
4. Frías – Miranda de Ebro	30	13	13	8	14	29	21	24	12	12	12	17
5. Miranda de Ebro – Haro	36	15	14	9	17	36	37	37	16	13	15	24
6. Haro – Logroño	18	6	7	5	14	34	37	36	12	4	7	11
7. Logroño – Calahorra	18	6	7	5	14	34	37	36	12	4	7	11
8. Calahorra – Tudela	19	8	7	7	15	39	39	40	15	5	9	14
9. Tudela – Zaragoza	30	8	12	12	24	47	59	54	19	7	14	24
10. Zaragoza – Caspe	29	7	12	11	21	42	58	53	15	6	14	23
11. Caspe – Mequinenza	29	7	12	11	21	42	58	53	15	6	14	23
12. Mequinenza – Móra d'Ebre	46	21	29	24	31	48	65	62	30	20	36	46
13. Móra d'Ebre – Tortosa	31	20	26	20	18	21	29	30	26	20	34	34
14. Tortosa – Deltebre	32	21	28	20	20	23	30	35	36	24	36	35

The Camino Natural del Ebro section by section

Upper Ebro: Fontibre – Miranda de Ebro

Between Fontibre and Miranda de Ebro there are warnings for storms, wind, rain and snow, and January is the busiest month. It's the section with the most snow warnings: in the Cantabria del Ebro zone, yellow takes 5 cm in 24 hours.

Most common: storms, wind and rain. Most warnings in January and June; fewest in April and September.

La Rioja: Miranda de Ebro – Tudela

Along the riverbanks from Miranda to Tudela, storms and heat are the top reasons for a warning, with July and August the busiest months. April and October are the calmest.

Most common: storms, heat and rain. Most warnings in July and August; fewest in April and October.

Aragon: Tudela – Mequinenza

From Tudela to Mequinenza, heat is the top reason for a warning: the Ribera del Ebro de Zaragoza zone has the most heat warnings on the route, and here yellow starts at 36 °C. Storms and wind come next.

Most common: heat, storms and wind. Most warnings in July and August; fewest in October and February.

Catalonia: Mequinenza – Deltebre

On the last section, from Mequinenza to Deltebre, wind is the top reason for a warning: the southern Tarragona pre-coastal zone has the most warnings on the whole route and the most wind warnings. It's the busiest section, above all in August and July.

Most common: wind, rain and storms. Most warnings in August and July; fewest in February and October.

The worst days on the Camino Natural del Ebro

The days since 2018 with orange or red on the most stages at once.

red24 August 2023: red warning on 14 of 14 stages, for heat · the episode
red11 August 2025: red warning on 14 of 14 stages, for heat · the episode
red16 August 2025: red warning on 14 of 14 stages, for heat · the episode
red17 August 2025: red warning on 14 of 14 stages, for storms and heat · the episode
orange23 August 2023: orange warning on 14 of 14 stages, for heat · the episode
orange6 July 2026: orange warning on 14 of 14 stages, for heat · the episode
red9 January 2021: red warning on 13 of 14 stages, for cold and snow · the episode
red15 August 2025: red warning on 13 of 14 stages, for heat · the episode

When a warning is issued on the Camino Natural del Ebro

Thresholds change from zone to zone. These are the yellow ones in the Camino Natural del Ebro's zones:

Zone	Heat	Cold	Wind	Rain 1 h	Snow 24 h
Centro y valle de Villaverde	34 °C	−4 °C	90 km/h	15 mm	2 cm
Cantabria del Ebro	34 °C	−6 °C	80 km/h	15 mm	5 cm
Norte de Burgos	36 °C	−6 °C	70 km/h	15 mm	2 cm
Ribera del Ebro de La Rioja	36 °C	−4 °C	70 km/h	15 mm	2 cm
Ribera del Ebro de Navarra	36 °C	−4 °C	70 km/h	15 mm	2 cm
Ribera del Ebro de Zaragoza	36 °C	−4 °C	70 km/h	15 mm	2 cm
Prelitoral sur de Tarragona	36 °C	−4 °C	70 km/h	20 mm	2 cm
Litoral sur de Tarragona	34 °C	−1 °C	80 km/h	20 mm	2 cm

Yellow thresholds from AEMET's warning plan. Orange and red need more. Storms have no numeric threshold.

Tips for the Camino Natural del Ebro

Check AEMET's forecast the evening before each stage, and the zone's warnings on the Climaviso map.
In July and August, set off early: heat is the top reason for a warning in high summer, above all between Tudela and Mequinenza.
With a wind warning, expect crosswind gusts and headwinds, above all on the Tarragona section.
In May and June, watch for storms: they're the top reason for a warning in those months.
A warning covers the whole zone: it doesn't mean it will happen on your stage, but it does mean you should keep an eye out.

Frequently asked questions

What's the best month to ride the Camino Natural del Ebro?

By warnings, October: on average, 1.6 warning days if you ride the 14 stages that month. Then April and February. The month with the most warnings is August, with 5.2 days.

Which section of the Camino Natural del Ebro gets the most rain warnings?

Catalonia: on average, a rain warning on 9% of days, mostly in June, August and September.

Does the Camino Natural del Ebro get hot enough for warnings in summer?

In July and August, the section with the most heat warnings is Aragon: a heat warning on 47% of days, on average.

Can it snow on the Camino Natural del Ebro?

Yes, above all on the mountain sections: snow warnings bunch up in the Centro y valle de Villaverde, Cantabria del Ebro and Norte de Burgos zones, in January, February and March. There, yellow needs 5 cm in 24 hours.

What should I do if there's a warning on my stage?

A yellow warning calls for attention, not cancelling: check the forecast and, in heat, ride first thing. With strong wind, above all crosswind, shorten the stage or wait. With storms, find shelter before the afternoon. With orange or red, follow Civil Protection's advice and don't set off.

This is not a forecast: it counts the warnings AEMET issued on those dates in past years. A warning is a forecast that a threshold will be crossed in the zone, not damage.