Drought in Guaynabo Municipio, PR: 0.8 years in 10 since 2000

0.8 years in 10

Guaynabo Municipio, PR: 2 of 26 full years had 13+ weeks in drought. Less drought-prone than most US counties.

1. 1
2. 0
3. 0
4. 0
5. 0
6. 0
7. 0
8. 2
9. 0
10. 0
11. 0
12. 0
13. 0
14. 0
15. 0
16. 31
17. 13
18. 0
19. 0
20. 5
21. 8
22. 0
23. 9
24. 0
25. 6
26. 0

20002025

Drought years: 2015 (31 wk) and 2016 (13 wk). Not a single drought week in 2001, 2002, 2003, 2004, 2005, 2006, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2017, 2018, 2021, 2023 and 2025.

A regular lawn is fine here; plan for the odd dry year

Real droughts are rare here. A smart controller that skips watering after rain covers the odd dry year.

You can keep a regular lawn. Worth doing: a rain-sensing or smart controller, and deeper, less frequent watering if Jul turns dry.

Against the rest of PR

24th most drought-prone of 78 PR counties; the PR middle is 0.4 in 10. Closest on the list: Vieques Municipio (0.8 in 10) and San Lorenzo Municipio (0.8 in 10). Driest in PR: Salinas Municipio (2.7 in 10). Least drought: Mayaguez Municipio (0 in 10).

When in the year it hits

Most often in Jul (17% of weeks), then Jun (14%) and Feb (9%). Least in May (0%). May to September averages 9%.

1. 5 Jan
2. 9 Feb
3. 4 Mar
4. 0 Apr
5. 0 May
6. 14 Jun
7. 17 Jul
8. 8 Aug
9. 9 Sep
10. 7 Oct
11. 5 Nov
12. 4 Dec

The worst year: 2015

2015: 31 weeks in drought, peaking at D3 extreme. Across 1,401 weekly maps: 6.7% of all weeks at D1 or worse, 1.7% at D2, 1.1% at D3, never any D4. Longest unbroken spell: 44 weeks, Jun 2, 2015 to Mar 29, 2016.

Lately

Last drought year: 2016, 13 weeks. 2016-2025: 1 in 10, against 0.6 in 10 for 2000-2015, about the same. So far in 2026: 19 of 44 weeks in drought, through Nov 3, 2026.

Further reading

Guaynabo Municipio lands on the plan covered in keeping a regular lawn. Its worst year, 2015, was not one of the big national drought years; see the worst years since 2000. How each of Guaynabo Municipio's 1,401 weeks was judged: how drought is counted.