The total solar eclipse on July 2, 2019, has been studied by using data of the La Serena ground magnetic station in Chile located in the path of the totality (at geographic coordinates: 29.827° S, 71.261° W). The event reached 100% darkness and occurred from 1522:34 hr to 1746:36 hr LT. We monitored the X, Y, Z‑components of the geomagnetic field with a fluxgate magnetometer to investigate their variation caused by the passing of the Moon in front of the Sun. Our results show positive growth up to ∼12 nT for all components in the same time window during the eclipse and in total synchrony with its phases. Having to discard any effect on the observations such as magnetic and solar activities, seasonal and geographical conditions, and instrumental effects, we report a total increase of the geomagnetic field during this phenomenon.