A recurrent circumglobal teleconnection (CGT) pattern in the summertime midlatitude circulation of the Northern Hemisphere is identified through analysis of 56 years of NCEP–NCAR reanalysis data. This pattern, characterized by a zonal wavenumber-5 structure, is primarily positioned within a waveguide associated with the westerly jet stream. The CGT is closely linked to significant rainfall and surface air temperature anomalies in regions such as western Europe, European Russia, India, east Asia, and North America. It shows strong correlations with the Indian summer monsoon (ISM) and El Niño–Southern Oscillation (ENSO), though the relationship varies depending on the phase of these phenomena. The CGT is hypothesized to be a key driver of climate variability and predictability in these regions. The CGT is associated with a global-scale wave train that connects Asia and North America, with regional manifestations including the ISM–EASM teleconnection, the "silk road" teleconnection, and the "Tokyo–Chicago express." The CGT is influenced by the interaction between the ISM and ENSO, with the ISM acting as a "conductor" linking these systems. The CGT's structure is primarily barotropic, except for a baroclinic structure near the northwest of India. The CGT's variability is not significantly linked to the Arctic Oscillation (AO) or the western North Pacific summer monsoon (WNPSM). EOF analysis of seasonal 200-hPa geopotential height anomalies reveals that the CGT is the second leading mode of interannual variability in the NH summer. The CGT is associated with significant rainfall and temperature anomalies, and its spatial structure is closely linked to the ISM and ENSO. The CGT's relationship with ENSO is complex, with the CGT being independent of ENSO in non-ENSO years but showing significant correlation with the ISM. The CGT is maintained by interactions between the global wave train and the ISM heat source, and its variability is influenced by internal dynamics of the basic state, including the role of the ISM and midlatitude westerly jets. The CGT is also linked to the AO, though the relationship is weak. The CGT's structure and variability are influenced by the interaction between the ISM and ENSO, and its role in climate variability and predictability is significant. The CGT's influence on precipitation and temperature is evident in various regions, with the CGT being a key factor in the interannual variability of climate in the NH.A recurrent circumglobal teleconnection (CGT) pattern in the summertime midlatitude circulation of the Northern Hemisphere is identified through analysis of 56 years of NCEP–NCAR reanalysis data. This pattern, characterized by a zonal wavenumber-5 structure, is primarily positioned within a waveguide associated with the westerly jet stream. The CGT is closely linked to significant rainfall and surface air temperature anomalies in regions such as western Europe, European Russia, India, east Asia, and North America. It shows strong correlations with the Indian summer monsoon (ISM) and El Niño–Southern Oscillation (ENSO), though the relationship varies depending on the phase of these phenomena. The CGT is hypothesized to be a key driver of climate variability and predictability in these regions. The CGT is associated with a global-scale wave train that connects Asia and North America, with regional manifestations including the ISM–EASM teleconnection, the "silk road" teleconnection, and the "Tokyo–Chicago express." The CGT is influenced by the interaction between the ISM and ENSO, with the ISM acting as a "conductor" linking these systems. The CGT's structure is primarily barotropic, except for a baroclinic structure near the northwest of India. The CGT's variability is not significantly linked to the Arctic Oscillation (AO) or the western North Pacific summer monsoon (WNPSM). EOF analysis of seasonal 200-hPa geopotential height anomalies reveals that the CGT is the second leading mode of interannual variability in the NH summer. The CGT is associated with significant rainfall and temperature anomalies, and its spatial structure is closely linked to the ISM and ENSO. The CGT's relationship with ENSO is complex, with the CGT being independent of ENSO in non-ENSO years but showing significant correlation with the ISM. The CGT is maintained by interactions between the global wave train and the ISM heat source, and its variability is influenced by internal dynamics of the basic state, including the role of the ISM and midlatitude westerly jets. The CGT is also linked to the AO, though the relationship is weak. The CGT's structure and variability are influenced by the interaction between the ISM and ENSO, and its role in climate variability and predictability is significant. The CGT's influence on precipitation and temperature is evident in various regions, with the CGT being a key factor in the interannual variability of climate in the NH.